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<TITLE>S-8</TITLE>
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<DIV align="center">
<B><FONT size="2">As filed with the Securities and Exchange
Commission on December&nbsp;23, 2004</FONT></B>
</DIV>

<DIV align="right">
<B><FONT size="2">Registration
No.&nbsp;333-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B>
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<B><FONT size="2">UNITED STATES</FONT></B>
</DIV>

<DIV align="center">
<B><FONT size="2">SECURITIES AND EXCHANGE COMMISSION</FONT></B>
</DIV>

<DIV align="center">
<B><FONT size="2">Washington,&nbsp;D.C. 20549</FONT></B>
</DIV>

<P align="center">
<B><FONT size="4">Form&nbsp;S-8</FONT></B>

<DIV align="center">
<B><FONT size="2">REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OF 1933</FONT></B>
</DIV>

<P align="center">
<B><FONT size="5">Sanofi-Aventis</FONT></B>

<DIV align="center">
<FONT size="2">(Exact name of registrant as specified in its
charter)
</FONT>
</DIV>

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<TABLE width="60%" align="center" cellspacing="0" cellpadding="0" border="0">

<TR>
    <TD width="45%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="52%"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD align="center" valign="top">
    <B><FONT size="2">Republic of France</FONT></B></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <B><FONT size="2">133529324</FONT></B></TD>
</TR>

<TR>
    <TD align="center" valign="top">
    <FONT size="2">(State or other jurisdiction of<BR>
    incorporation or organization)
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">(I.R.S. Employer Identification No.)
    </FONT></TD>
</TR>

</TABLE>
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<DIV align="center">
<B><FONT size="2">174 avenue de France</FONT></B>
</DIV>

<DIV align="center">
<B><FONT size="2">75013 Paris, France</FONT></B>
</DIV>

<DIV align="center">
<B><FONT size="2">Tel: + 33 1 53 77 40 00</FONT></B>
</DIV>

<DIV align="center">
<FONT size="2">(Address of Principal Executive Offices)
</FONT>
</DIV>

<P align="center">
<B>Aventis Pharmaceuticals Savings Plan</B>

<DIV align="center">
<B>Aventis Pasteur Savings Plan</B>
</DIV>

<DIV align="center">
<B>Aventis Pharmaceuticals Puerto Rico Savings Plan</B>
</DIV>

<DIV align="center">
<FONT size="2">(Full titles of the plans)
</FONT>
</DIV>

<P align="center">
<B><FONT size="2">Joseph Haggerty</FONT></B>

<DIV align="center">
<B><FONT size="2">Vice President and General Counsel</FONT></B>
</DIV>

<DIV align="center">
<B><FONT size="2">Aventis Pharmaceuticals</FONT></B>
</DIV>

<DIV align="center">
<B><FONT size="2">300 Somerset Corporate Boulevard</FONT></B>
</DIV>

<DIV align="center">
<B><FONT size="2">Bridgewater, New Jersey 08807</FONT></B>
</DIV>

<DIV align="center">
<FONT size="2">(Name and address of agent for service)
</FONT>
</DIV>

<P align="center">
<B><FONT size="2">Tel: (908)&nbsp;243-6000</FONT></B>

<DIV align="center">
<FONT size="2">(Telephone number, including area code, of agent
for service)
</FONT>
</DIV>

<P align="center">
<B>Calculation of Registration Fee</B>

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<TR>
    <TD width="26%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="7%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="7%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="7%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="7%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="8%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="8%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="7%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="7%"><FONT size="2">&nbsp;</FONT></TD>
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<TR>
    <TD></TD>
    <TD></TD>
    <TD colspan="3"></TD>
    <TD></TD>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">Proposed</FONT></B></TD>
    <TD></TD>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">Proposed maximum</FONT></B></TD>
    <TD></TD>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">Amount of</FONT></B></TD>
</TR>

<TR>
    <TD align="center" nowrap><B><FONT size="1">Title of securities to be</FONT></B></TD>
    <TD></TD>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">Amount to be</FONT></B></TD>
    <TD></TD>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">maximum offering</FONT></B></TD>
    <TD></TD>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">aggregate offering</FONT></B></TD>
    <TD></TD>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">registration fee</FONT></B></TD>
</TR>

<TR>
    <TD align="center" nowrap><B><FONT size="1">registered</FONT></B></TD>
    <TD></TD>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">registered</FONT></B></TD>
    <TD></TD>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">price per share</FONT></B></TD>
    <TD></TD>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">price</FONT></B></TD>
    <TD></TD>
    <TD colspan="3" align="center" nowrap><HR size="1" noshade></TD>
</TR>

<TR>
    <TD colspan="17"></TD>
</TR>

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    <TD colspan="17" align="center" nowrap><HR size="1" noshade></TD>
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    <TD align="left" valign="top">
    <B><FONT size="2">Sanofi-Aventis Ordinary Shares,<BR>
    nominal
    value&nbsp;<FONT face="times new roman,times">&#128;</FONT>2(1)</FONT></B></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top" nowrap><B><FONT size="2">2,500,000&nbsp; shares</FONT></B></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top"><B><FONT size="2">$</FONT></B></TD>
    <TD align="right" valign="top" nowrap><B><FONT size="2">&nbsp;75.00(2</FONT></B></TD>
    <TD align="left" valign="top" nowrap><B><FONT size="2">)</FONT></B></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top"><B><FONT size="2">$</FONT></B></TD>
    <TD align="right" valign="top" nowrap><B><FONT size="2">&nbsp;187,500,000</FONT></B></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top"><B><FONT size="2">$</FONT></B></TD>
    <TD align="right" valign="top" nowrap><B><FONT size="2">&nbsp;22,069(3</FONT></B></TD>
    <TD align="left" valign="top" nowrap><B><FONT size="2">)</FONT></B></TD>
</TR>

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    <TD colspan="17" align="left"><HR size="1" noshade></TD>

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    <TD width="4%"></TD>
    <TD width="96%"></TD>
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<TR valign="top">
    <TD><FONT size="2">(1)</FONT></TD>
    <TD align="left">
    <FONT size="2">In addition, pursuant to Rule&nbsp;416(c) under
    the Securities Act of 1933 (the &#147;Securities Act&#148;),
    this registration statement also covers an indeterminate amount
    of interests to be offered or sold pursuant to the employee
    benefit plan described herein.
    </FONT></TD>
</TR>

<TR>
    <TD>&nbsp;</TD>
</TR>

<TR valign="top">
    <TD><FONT size="2">(2)</FONT></TD>
    <TD align="left">
    <FONT size="2">Estimated solely for the purpose of calculating
    the registration fee pursuant to Rule&nbsp;457(h) under the
    Securities Act, and calculated as two(2) multiplied by the
    average of the high and low sales prices of the
    Registrant&#146;s American Depositary Shares (&#147;ADSs&#148;)
    on the New York Stock Exchange, as reported in the consolidated
    reporting system for December&nbsp;17, 2004. Each ADS represents
    one-half of one Sanofi-Aventis Ordinary Share and the average of
    the high and low sales prices of one ADS was $37.50.
    </FONT></TD>
</TR>

<TR>
    <TD>&nbsp;</TD>
</TR>

<TR valign="top">
    <TD><FONT size="2">(3)</FONT></TD>
    <TD align="left">
    <FONT size="2">Calculated as the product of the proposed maximum
    aggregate offering price and 0.0001177.
    </FONT></TD>
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<P align="center">
<B><FONT size="2">PART&nbsp;I</FONT></B>

<P align="center">
<B><FONT size="2">INFORMATION REQUIRED IN THE
PROSPECTUS</FONT></B>

<DIV>&nbsp;</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="9%"></TD>
    <TD width="91%"></TD>
</TR>

<TR valign="top">
    <TD><B><FONT size="2">Item&nbsp;1.</FONT></B></TD>
    <TD>
    <B><FONT size="2">Plan Information</FONT></B></TD>
</TR>

</TABLE>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">Omitted pursuant to the instructions and
provisions of Form&nbsp;S-8.
</FONT>

<DIV>&nbsp;</DIV>

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<TR>
    <TD width="9%"></TD>
    <TD width="91%"></TD>
</TR>

<TR valign="top">
    <TD><B><FONT size="2">Item&nbsp;2.</FONT></B></TD>
    <TD>
    <B><FONT size="2">Registrant Information and Employee Plan
    Annual Information</FONT></B></TD>
</TR>

</TABLE>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">Omitted pursuant to the instructions and
provisions of Form&nbsp;S-8.
</FONT>

<P align="center">
<B><FONT size="2">PART&nbsp;II</FONT></B>

<P align="center">
<B><FONT size="2">INFORMATION REQUIRED IN THE REGISTRATION
STATEMENT</FONT></B>

<DIV>&nbsp;</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="9%"></TD>
    <TD width="91%"></TD>
</TR>

<TR valign="top">
    <TD><B><FONT size="2">Item&nbsp;3.</FONT></B></TD>
    <TD>
    <B><FONT size="2">Incorporation of Documents by
    Reference</FONT></B></TD>
</TR>

</TABLE>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">This Registration Statement on Form&nbsp;S-8
hereby incorporates by reference the contents of the following
documents filed by Sanofi-Aventis (the &#147;Registrant&#148;,
formerly known as Sanofi-Synth&#233;labo) or by the Aventis
Pharmaceuticals Savings Plan, the Aventis Pasteur Inc. 401(k)
Plan, and the Aventis Pharmaceuticals Puerto Rico Savings Plan
(together, the &#147;Plans&#148;) with the Securities and
Exchange Commission (the &#147;Commission&#148;) pursuant to the
Securities Exchange Act of 1934, as amended (the &#147;Exchange
Act&#148;):
</FONT>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Annual
Report on Form&nbsp;20-F of the Registrant for the year ended
December&nbsp;31, 2003 (Commission file No.&nbsp;001-31368);
</FONT>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Reports on
Form&nbsp;6-K furnished by the Registrant (whether under the
names Sanofi-Synth&#233;labo or Sanofi-Aventis) to the
Commission pursuant to Section&nbsp;13(a) or 15(d) of the
Exchange Act on the following dates: January&nbsp;7, 2004,
January&nbsp;8, 2004, January&nbsp;12, 2004, January&nbsp;20,
2004, January&nbsp;29, 2004, February&nbsp;4, 2004,
February&nbsp;16, 2004, March&nbsp;9, 2004, March&nbsp;10, 2004,
March&nbsp;19, 2004, March&nbsp;23, 2004, March&nbsp;31, 2004,
April&nbsp;5, 2004, April&nbsp;12, 2004, April&nbsp;13, 2004,
April&nbsp;15, 2004, April&nbsp;22, 2004, April&nbsp;26, 2004,
April&nbsp;27, 2004, May&nbsp;4, 2004, May&nbsp;5, 2004,
May&nbsp;14, 2004, May&nbsp;21, 2004, May&nbsp;26, 2004,
June&nbsp;2, 2004, June&nbsp;&nbsp;4, 2004, June&nbsp;14, 2004,
June&nbsp;22, 2004, June&nbsp;24, 2004, June&nbsp;25, 2004,
July&nbsp;15, 2004 (two reports), July&nbsp;21, 2004,
July&nbsp;29, 2004, August&nbsp;2, 2004, August&nbsp;9, 2004,
August&nbsp;12, 2004, August&nbsp;13, 2004, August&nbsp;19,
2004, August&nbsp;24, 2004, August&nbsp;31, 2004,
September&nbsp;7, 2004, September&nbsp;14, 2004,
September&nbsp;16, 2004, September&nbsp;17, 2004, September 22
(two reports), October&nbsp;8, 2004 (report relating to
Actonel&#174; press release), October&nbsp;14, 2004,
November&nbsp;5, 2004 (report relating to Taxotere&#174; and
Eloxatin&#174; press releases); November&nbsp;9, 2004;
November&nbsp;24, 2004, November&nbsp;26, 2004 (report relating
to press release regarding relocation of Aventis headquarters),
November&nbsp;30, 2004, December&nbsp;9, 2004 (report relating
to press release regarding U.S.&nbsp;intellectual property
litigation); December&nbsp;10, 2004; December&nbsp;16, 2004
(report relating to financial calendar of Sanofi-Aventis);
December&nbsp;20, 2004; December&nbsp;22, 2004 and
December&nbsp;23, 2004;
</FONT>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">(c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The description
of the Registrant&#146;s ordinary shares, nominal
value&nbsp;<FONT face="times new roman,times">&#128;</FONT>2&nbsp;per
share, set forth under the captions &#147;A. Share Capital&#148;
and &#147;B. Memorandum and Articles of Association&#148; in
Item&nbsp;10 of the Registrant&#146;s Registration Statement on
Form&nbsp;20-F (Commission file No.&nbsp;001-31368), filed with
the Commission on June&nbsp;25, 2002 and the updated
descriptions of the Registrant&#146;s ordinary shares and
American depositary shares contained in the Post-Effective
Amendment No.&nbsp;3 to the Registration Statement on
Form&nbsp;F-4 (Registration No.&nbsp;333-112314) (the
&#147;Form&nbsp;F-4&#148;) filed by the Registrant with the
Commission on November&nbsp;9, 2004, under the captions
&#147;Description Of Sanofi-Aventis Ordinary Shares&#148; and
&#147;Description Of Sanofi-Aventis American Depositary
Shares&#148;, including any amendment or report filed for the
purpose of updating such description;
</FONT>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">(d)&nbsp;The most recent Annual Report on
Form&nbsp;11-K filed with the Commission by each of the
Plans;&nbsp;and
</FONT>
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<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">(e)&nbsp;All documents filed by the Registrant
with the Commission pursuant to Sections&nbsp;13(a),
13(c),&nbsp;14, or&nbsp;15(d) of the Exchange Act prior to the
filing of a post-effective amendment indicating that all
securities offered have been sold or that deregisters all
securities then remaining unsold shall be deemed to be
incorporated by reference in this Registration Statement and to
be a part hereof from the date of filing of such documents
reference. Statements contained in the foregoing documents
incorporated by reference shall be deemed to be modified or
superseded hereby to the extent that statements contained in the
Prospectus, or in any subsequently filed documents that are
amendments hereto or that are incorporated herein by reference,
shall modify or replace such statements.
</FONT>

<DIV>&nbsp;</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="9%"></TD>
    <TD width="91%"></TD>
</TR>

<TR valign="top">
    <TD><B><FONT size="2">Item&nbsp;4.</FONT></B></TD>
    <TD>
    <B><FONT size="2">Description of Securities</FONT></B></TD>
</TR>

</TABLE>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">The information required by Item&nbsp;4 is not
applicable to this Registration Statement because the class of
securities to be offered is registered under Section&nbsp;12 of
the Exchange Act.
</FONT>

<DIV>&nbsp;</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="9%"></TD>
    <TD width="91%"></TD>
</TR>

<TR valign="top">
    <TD><B><FONT size="2">Item&nbsp;5.</FONT></B></TD>
    <TD>
    <B><FONT size="2">Interests of named Experts and
    Counsel</FONT></B></TD>
</TR>

</TABLE>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">The information required by Item&nbsp;5 is not
applicable to this Registration Statement.
</FONT>

<DIV>&nbsp;</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="9%"></TD>
    <TD width="91%"></TD>
</TR>

<TR valign="top">
    <TD><B><FONT size="2">Item&nbsp;6.</FONT></B></TD>
    <TD>
    <B><FONT size="2">Indemnification of Directors and
    Officers</FONT></B></TD>
</TR>

</TABLE>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">The French Commercial Code prohibits provisions
of <I>statuts </I>that limit the liability of directors.
However, if a director is sued by a third party and ultimately
prevails in the litigation on all counts, but is nevertheless
required to bear attorneys&#146; fees and costs, the company may
reimburse those fees and costs pursuant to an indemnification
arrangement with the director.
</FONT>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">Under French law a company may purchase directors
and officers&#146; insurance for all or part of the members of
its management. A French corporation is responsible to third
parties for the consequences of the decisions of its board of
directors. However, if those decisions qualify as mismanagement,
the relevant member of the board of directors may have to fully
or partly indemnify the company. Sanofi-Aventis has purchased
insurance for all of its directors.
</FONT>

<DIV>&nbsp;</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="9%"></TD>
    <TD width="91%"></TD>
</TR>

<TR valign="top">
    <TD><B><FONT size="2">Item&nbsp;7.</FONT></B></TD>
    <TD>
    <B><FONT size="2">Exemption from Registration Claimed</FONT></B></TD>
</TR>

</TABLE>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">The information required by Item&nbsp;7 is not
applicable to this Registration Statement.
</FONT>

<DIV>&nbsp;</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="9%"></TD>
    <TD width="91%"></TD>
</TR>

<TR valign="top">
    <TD><B><FONT size="2">Item&nbsp;8.</FONT></B></TD>
    <TD>
    <B><FONT size="2">Exhibits</FONT></B></TD>
</TR>

</TABLE>

<CENTER>
<TABLE width="100%" align="center" cellspacing="0" cellpadding="0" border="0">

<TR>
    <TD width="8%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="8%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="80%"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="left" nowrap><FONT size="1">Exhibit</FONT></TD>
    <TD></TD>
    <TD></TD>
</TR>

<TR>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">Number</FONT></B></TD>
    <TD></TD>
    <TD align="left" nowrap><B><FONT size="1">Description</FONT></B></TD>
</TR>

<TR>
    <TD colspan="3" align="center" nowrap><HR size="1" noshade></TD>
    <TD></TD>
    <TD align="center" nowrap><HR size="1" noshade></TD>
</TR>

<TR>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top" nowrap><FONT size="2">4.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top">
    <FONT size="2">Bylaws (<I>statuts</I>) of Sanofi-Aventis
    (incorporated herein by reference to Exhibit&nbsp;3.1 of
    Post-Effective Amendment No.&nbsp;2 to the Registration
    Statement on Form&nbsp;F-4 (Registration No.&nbsp;333-112314) as
    filed by the Registrant with the Commission on October&nbsp;15,
    2004)
    </FONT></TD>
</TR>

<TR>
    <TD colspan="5"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top" nowrap><FONT size="2">4.2</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top">
    <FONT size="2">Deposit Agreement (including the form of
    depositary receipt) between the Registrant and The Bank of New
    York, as depositary (incorporated herein by reference to
    Exhibit&nbsp;A to the Registration Statement on Form&nbsp;F-6
    (Registration No.&nbsp;333-116262) relating to American
    Depositary Shares, filed on June&nbsp;8, 2004)
    </FONT></TD>
</TR>

<TR>
    <TD colspan="5"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top" nowrap><FONT size="2">23.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top">
    <FONT size="2">Consent of Ernst&nbsp;&#38; Young Audit to
    incorporation by reference of Independent Auditors&#146; Report
    </FONT></TD>
</TR>

<TR>
    <TD colspan="5"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top" nowrap><FONT size="2">23.2</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top">
    <FONT size="2">Consent of PricewaterhouseCoopers Audit to
    incorporation by reference of Independent Auditors&#146; Report
    </FONT></TD>
</TR>

</TABLE>
</CENTER>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">The Registrant will submit or has submitted the
Plans and any amendments thereto to the Internal Revenue Service
(&#147;IRS&#148;) in a timely manner for a determination whether
the Plans are qualified under Section&nbsp;401 of the Internal
Revenue Code and has made or will make all changes required by
the IRS in order to so qualify the Plans.
</FONT>
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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV>&nbsp;</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="9%"></TD>
    <TD width="91%"></TD>
</TR>

<TR valign="top">
    <TD><B><FONT size="2">Item&nbsp;9.</FONT></B></TD>
    <TD>
    <B><FONT size="2">Undertakings</FONT></B></TD>
</TR>

</TABLE>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The undersigned
Registrant hereby undertakes:
</FONT>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">(1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To file, during
any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement to
include any material information with respect to the plan of
distribution not previously disclosed in the Registration
Statement or any material change to such information in the
Registration Statement,
</FONT>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">(2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;That, for the
purpose of determining any liability under the Securities Act,
each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered
therein, and the offering of such securities at that time shall
be deemed to be the initial <I>bona fide </I>offering thereof.
</FONT>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">(3)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To remove from
registration by means of a post-effective amendment any of the
securities being registered that remain unsold at the
termination of the offering.
</FONT>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The undersigned
registrant hereby undertakes that, for purposes of determining
any liability under the Securities Act, each filing of the
Registrant&#146;s annual report pursuant to Section&nbsp;13(a)
or Section&nbsp;15(d) of the Exchange Act (and, where
applicable, each filing of an employee benefit plan&#146;s
annual report pursuant to Section&nbsp;15(d) of the Exchange
Act) that is incorporated by reference in the Registration
Statement shall be deemed to be the initial <I>bona fide
</I>offering thereof.
</FONT>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">(c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insofar as
indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers, and controlling persons
of the Registrant pursuant to the provisions described in
Item&nbsp;6 of this Registration Statement, or otherwise, the
registrant has been advised that in the opinion of the
Commission such indemnification is against public policy as
expressed in the Securities Act and is, therefore,
unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a director, officer,
or controlling person of the Registrant in the successful
defense of any action, suit, or proceeding) is asserted by such
director, officer, or controlling person in connection with the
securities being registered, the Registrant will, unless in the
opinion of its counsel the matter has been settled by
controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act and
will be governed by the final adjudication of such issue.
</FONT>
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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<P align="center">
<B>SIGNATURES</B>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<I><FONT size="2">The Registrant.</FONT></I><FONT size="2">
Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe
that it meets all of the requirements for filing on
Form&nbsp;S-8 and has duly caused this registration statement to
be signed on its behalf by the undersigned, thereunto duly
authorized, in Paris, France, as of December&nbsp;23, 2004.
</FONT>
<P>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="64%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD align="left">
    <B><FONT size="2">SANOFI-AVENTIS</FONT></B></TD>
</TR>

</TABLE>
<P>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="2%"></TD>
    <TD width="62%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD><FONT size="2">By:&nbsp;</FONT></TD>
    <TD align="center">
    <FONT size="2">/s/ JEAN-FRAN&#199;OIS DEHECQ
    </FONT></TD>
</TR>

</TABLE>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="64%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD align="left">
    <HR size="1" align="left" noshade></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD align="left">
    <FONT size="2">Name:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Jean-Fran&#231;ois
    Dehecq
    </FONT></TD>
</TR>

</TABLE>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="8%"></TD>
    <TD width="56%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD><FONT size="2">Title:</FONT></TD>
    <TD align="left">
    <FONT size="2">Chairman&nbsp;&#38; Chief Executive Officer
    </FONT></TD>
</TR>

</TABLE>

<P align="center">
<B>POWER OF ATTORNEY</B>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">KNOW ALL PERSONS BY THESE PRESENTS, that each
person whose signature appears below hereby constitutes and
appoints Jean-Fran&#231;ois Dehecq, Jean-Claude Leroy and Dirk
Oldenburg as attorney-in-fact and agent, with full power of
substitution and resubstitution, to sign on his or her behalf,
individually and in any and all capacities, including the
capacities stated below, any and all post-effective amendments
to this Registration Statement and to file the same, with all
exhibits thereto, and other documents in connection therewith,
with the Securities and Exchange Commission, granting to each
said attorney-in-fact and agent, acting individually, full power
and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as
fully to all intents and purposes as he or she might or could do
in person, hereby ratifying and confirming all that said
attorney-in-fact and agent, or his substitute, may lawfully do
or cause to be done by virtue hereof.
</FONT>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<FONT size="2">Pursuant to the requirements of the Securities
Act of 1933, as amended, this registration statement has been
signed below by the following persons in the capacities and on
the dates indicated:
</FONT>

<CENTER>
<TABLE width="100%" align="center" cellspacing="0" cellpadding="0" border="0">

<TR>
    <TD width="5%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="24%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="39%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="23%"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3"></TD>
    <TD></TD>
    <TD></TD>
    <TD></TD>
    <TD></TD>
</TR>

<TR>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">Signature</FONT></B></TD>
    <TD></TD>
    <TD align="center" nowrap><B><FONT size="1">Title</FONT></B></TD>
    <TD></TD>
    <TD align="center" nowrap><B><FONT size="1">Date</FONT></B></TD>
</TR>

<TR>
    <TD colspan="3" align="center" nowrap><HR size="1" noshade></TD>
    <TD></TD>
    <TD align="center" nowrap><HR size="1" noshade></TD>
    <TD></TD>
    <TD align="center" nowrap><HR size="1" noshade></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ JEAN-FRAN&#199;OIS DEHECQ<BR>
    <HR size="1" noshade>Jean-Fran&#231;ois Dehecq
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Chairman, Chief Executive Officer<BR>
    <BR>
    and Director<BR>
    <BR>
    (Principal Executive Officer)
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ JEAN-CLAUDE LEROY<BR>
    <HR size="1" noshade>Jean-Claude Leroy
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Senior Vice President and Chief<BR>
    <BR>
    Financial Officer<BR>
    <BR>
    (Principal Financial Officer)
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ JEAN-LUC RENARD<BR>
    <HR size="1" noshade>Jean-Luc Renard
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Vice President Corporate Accounting<BR>
    <BR>
    and Tax<BR>
    <BR>
    (Principal Accounting Officer)
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ REN&#201; BARBIER DE LA SERRE<BR>
    <HR size="1" noshade>Ren&#233; Barbier de la Serre
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ JEAN-MARC BRUEL<BR>
    <HR size="1" noshade>Jean-Marc Bruel
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

</TABLE>
</CENTER>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<CENTER>
<TABLE width="100%" align="center" cellspacing="0" cellpadding="0" border="0">

<TR>
    <TD width="5%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="24%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="39%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="23%"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3"></TD>
    <TD></TD>
    <TD></TD>
    <TD></TD>
    <TD></TD>
</TR>

<TR>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">Signature</FONT></B></TD>
    <TD></TD>
    <TD align="center" nowrap><B><FONT size="1">Title</FONT></B></TD>
    <TD></TD>
    <TD align="center" nowrap><B><FONT size="1">Date</FONT></B></TD>
</TR>

<TR>
    <TD colspan="3" align="center" nowrap><HR size="1" noshade></TD>
    <TD></TD>
    <TD align="center" nowrap><HR size="1" noshade></TD>
    <TD></TD>
    <TD align="center" nowrap><HR size="1" noshade></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ ROBERT CASTAIGNE<BR>
    <HR size="1" noshade>Robert Castaigne
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ THIERRY DESMAREST<BR>
    <HR size="1" noshade>Thierry Desmarest
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ J&#220;RGEN DORMANN<BR>
    <HR size="1" noshade>J&#252;rgen Dormann
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ DOURO<BR>
    <HR size="1" noshade>Lord Douro
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ JEAN-REN&#201; FOURTOU<BR>
    <HR size="1" noshade>Jean-Ren&#233; Fourtou
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ SERGE KAMPF<BR>
    <HR size="1" noshade>Serge Kampf
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ IGOR LANDAU<BR>
    <HR size="1" noshade>Igor Landau
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ HUBERT MARKL<BR>
    <HR size="1" noshade>Hubert Markl
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ CHRISTIAN MULLIEZ<BR>
    <HR size="1" noshade>Christian Mulliez
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ LINDSAY OWEN-JONES<BR>
    <HR size="1" noshade>Lindsay Owen-Jones
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ KLAUS POHLE<BR>
    <HR size="1" noshade>Klaus Pohle
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ HERMANN SCHOLL<BR>
    <HR size="1" noshade>Hermann Scholl
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ G&#201;RARD VAN KEMMEL<BR>
    <HR size="1" noshade>G&#233;rard Van Kemmel
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

</TABLE>
</CENTER>
<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<CENTER>
<TABLE width="100%" align="center" cellspacing="0" cellpadding="0" border="0">

<TR>
    <TD width="5%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="24%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="39%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="23%"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3"></TD>
    <TD></TD>
    <TD></TD>
    <TD></TD>
    <TD></TD>
</TR>

<TR>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">Signature</FONT></B></TD>
    <TD></TD>
    <TD align="center" nowrap><B><FONT size="1">Title</FONT></B></TD>
    <TD></TD>
    <TD align="center" nowrap><B><FONT size="1">Date</FONT></B></TD>
</TR>

<TR>
    <TD colspan="3" align="center" nowrap><HR size="1" noshade></TD>
    <TD></TD>
    <TD align="center" nowrap><HR size="1" noshade></TD>
    <TD></TD>
    <TD align="center" nowrap><HR size="1" noshade></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ BRUNO WEYMULLER<BR>
    <HR size="1" noshade>Bruno Weymuller
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Director
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

<TR>
    <TD colspan="7"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" valign="top">
    <FONT size="2">/s/ TIMOTHY ROTHWELL<BR>
    <HR size="1" noshade>Timothy Rothwell
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">Authorized Representative in the United States of
    America
    </FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="center" valign="top">
    <FONT size="2">December&nbsp;23, 2004
    </FONT></TD>
</TR>

</TABLE>
</CENTER>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<P align="center">
<B>SIGNATURES</B>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<I><FONT size="2">The Plan.</FONT></I><FONT size="2"> Pursuant
to the requirements of the Securities Act of 1933, the Aventis
Pharmaceuticals Savings Plan has duly caused this registration
statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in Bridgewater, New Jersey, as of
December&nbsp;23, 2004.
</FONT>
<P>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="64%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD align="left">
    <B><FONT size="2">AVENTIS PHARMACEUTICALS SAVINGS PLAN</FONT></B></TD>
</TR>

</TABLE>
<P>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="4%"></TD>
    <TD width="60%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD><FONT size="2">By:&nbsp;</FONT></TD>
    <TD align="left">
    <FONT size="2">AVENTIS PHARMACEUTICALS RETIREMENT <BR>
     ADMINISTRATIVE COMMITTEE, Plan Administrator
    </FONT></TD>
</TR>

<TR>
    <TD>&nbsp;</TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD><FONT size="2">By:&nbsp;</FONT></TD>
    <TD align="left">
    <FONT size="2">/s/ LINDA NILSEN
    <HR size="1" align="left" noshade>
    </FONT></TD>
</TR>

</TABLE>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="64%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD align="center">
    <BR>
    <FONT size="2"> Linda Nilsen, Chairman
    </FONT></TD>
</TR>

</TABLE>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<P align="center">
<B>SIGNATURES</B>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<I><FONT size="2">The Plan.</FONT></I><FONT size="2"> Pursuant
to the requirements of the Securities Act of 1933, the Aventis
Pharmaceuticals Puerto Rico Savings Plan has duly caused this
registration statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in Manati, Puerto Rico,
as of December&nbsp;23, 2004.
</FONT>
<P>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="64%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD align="left">
    <B><FONT size="2">AVENTIS PHARMACEUTICALS PUERTO RICO SAVINGS
    PLAN</FONT></B></TD>
</TR>

</TABLE>
<P>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="4%"></TD>
    <TD width="60%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD><FONT size="2">By:&nbsp;</FONT></TD>
    <TD align="left">
    <FONT size="2">/s/ HELEN HEFNER
    <HR size="1" align="left" noshade>
    </FONT></TD>
</TR>

</TABLE>

<DIV align="left">

</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="64%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD align="center">
    <FONT size="2">Helen Hefner, Plan Administrator
    </FONT></TD>
</TR>

</TABLE>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<P align="center">
<B>SIGNATURES</B>

<P align="left">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<I><FONT size="2">The Plan.</FONT></I><FONT size="2"> Pursuant
to the requirements of the Securities Act of 1933, the Aventis
Pasteur Savings Plan has duly caused this registration statement
to be signed on its behalf by the undersigned, thereunto duly
authorized, in Swiftwater, Pennsylvania, as of December&nbsp;23,
2004.
</FONT>
<P>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="64%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD align="left">
    <B><FONT size="2">AVENTIS PASTEUR INC. 401(k) PLAN</FONT></B></TD>
</TR>

</TABLE>
<P>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="4%"></TD>
    <TD width="60%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD><FONT size="2">By:&nbsp;</FONT></TD>
    <TD align="left">
    <FONT size="2">/s/ DAMIAN BRAGA
    <HR size="1" align="left" noshade>
    </FONT></TD>
</TR>

</TABLE>

<DIV align="left">

</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">

<TR>
    <TD width="36%"></TD>
    <TD width="64%"></TD>
</TR>

<TR valign="top">
    <TD>&nbsp;</TD>
    <TD align="center">
    <FONT size="2">Damian Braga, Plan Administrator
    </FONT></TD>
</TR>

</TABLE>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<P align="center">
<B>EXHIBIT INDEX</B>

<CENTER>
<TABLE width="100%" align="center" cellspacing="0" cellpadding="0" border="0">

<TR>
    <TD width="8%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="1%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="8%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="3%"><FONT size="2">&nbsp;</FONT></TD>
    <TD width="80%"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">Exhibit</FONT></B></TD>
    <TD></TD>
    <TD></TD>
</TR>

<TR>
    <TD colspan="3" align="center" nowrap><B><FONT size="1">Number</FONT></B></TD>
    <TD></TD>
    <TD align="center" nowrap><FONT size="1">Description of Document</FONT></TD>
</TR>

<TR>
    <TD colspan="3" align="center" nowrap><HR size="1" noshade></TD>
    <TD></TD>
    <TD align="center" nowrap><HR size="1" noshade></TD>
</TR>

<TR valign="bottom" bgcolor="#EEEEEE">
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top" nowrap><FONT size="2">4.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top">
    <FONT size="2">Bylaws (<I>statuts</I>) of Sanofi-Synthelabo
    (incorporated herein by reference to Exhibit&nbsp;3.1 of
    Post-Effective Amendment No.&nbsp;2 to the Registration
    Statement on Form&nbsp;F-4 (Registration No.&nbsp;333-112314) as
    filed by the Registrant with the Commission on October&nbsp;15,
    2004)
    </FONT></TD>
</TR>

<TR valign="bottom" bgcolor="#EEEEEE">
    <TD colspan="5"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top" nowrap><FONT size="2">4.2</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top">
    <FONT size="2">Deposit Agreement (including the form of
    depositary receipt) between the Registrant and The Bank of New
    York, as depositary (incorporated herein by reference to
    Exhibit&nbsp;A to the Registration Statement on Form&nbsp;F-6
    (Registration No.&nbsp;333-116262) relating to American
    Depositary Shares, filed on June&nbsp;8, 2004)
    </FONT></TD>
</TR>

<TR>
    <TD colspan="5"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR valign="bottom" bgcolor="#EEEEEE">
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top" nowrap><FONT size="2">23.1</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top">
    <FONT size="2">Consent of Ernst&nbsp;&#38; Young Audit to
    incorporation by reference of Independent Auditors&#146; Report
    </FONT></TD>
</TR>

<TR valign="bottom" bgcolor="#EEEEEE">
    <TD colspan="5"><FONT size="2">&nbsp;</FONT></TD>
</TR>

<TR>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="right" valign="top" nowrap><FONT size="2">23.2</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD><FONT size="2">&nbsp;</FONT></TD>
    <TD align="left" valign="top">
    <FONT size="2">Consent of PricewaterhouseCoopers Audit to
    incorporation by reference of Independent Auditors&#146; Report
    </FONT></TD>
</TR>

</TABLE>
</CENTER>
</BODY>
</HTML>
[{"type": "S-8", "sequence": "1", "filename": "y04039bsv8.htm", "description": "FORM S-8", "secsgml_size_bytes": 52427}]
{"company-data": {"conformed-name": "SANOFI-AVENTIS", "cik": "0001121404", "assigned-sic": "2834", "irs-number": "133529324", "state-of-incorporation": "I0", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-121584", "film-number": "041223165"}, "business-address": {"street1": "174 AVENUE DE FRANCE", "city": "PARIS", "state": "I0", "zip": "75013", "phone": "33153774400"}, "mail-address": {"street1": "174 AVENUE DE FRANCE", "city": "PARIS", "state": "I0", "zip": "75013"}, "former-company": {"former-conformed-name": "SANOFI SYNTHELABO SA", "date-changed": "20010104"}}
S-8
As filed with the Securities and Exchange
Commission on December 23, 2004
Registration
No. 333-
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form S-8
REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OF 1933
Sanofi-Aventis
(Exact name of registrant as specified in its
charter)
Republic of France
133529324
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer Identification No.)
174 avenue de France
75013 Paris, France
Tel: + 33 1 53 77 40 00
(Address of Principal Executive Offices)
Aventis Pharmaceuticals Savings Plan
Aventis Pasteur Savings Plan
Aventis Pharmaceuticals Puerto Rico Savings Plan
(Full titles of the plans)
Joseph Haggerty
Vice President and General Counsel
Aventis Pharmaceuticals
300 Somerset Corporate Boulevard
Bridgewater, New Jersey 08807
(Name and address of agent for service)
Tel: (908) 243-6000
(Telephone number, including area code, of agent
for service)
Calculation of Registration Fee
Proposed
Proposed maximum
Amount of
Title of securities to be
Amount to be
maximum offering
aggregate offering
registration fee
registered
registered
price per share
price
Sanofi-Aventis Ordinary Shares,
nominal
    value
€
2(1)
2,500,000  shares
$
75.00(2
)
$
187,500,000
$
22,069(3
)
(1)
In addition, pursuant to Rule 416(c) under
    the Securities Act of 1933 (the "Securities Act"),
    this registration statement also covers an indeterminate amount
    of interests to be offered or sold pursuant to the employee
    benefit plan described herein.
(2)
Estimated solely for the purpose of calculating
    the registration fee pursuant to Rule 457(h) under the
    Securities Act, and calculated as two(2) multiplied by the
    average of the high and low sales prices of the
    Registrant's American Depositary Shares ("ADSs")
    on the New York Stock Exchange, as reported in the consolidated
    reporting system for December 17, 2004. Each ADS represents
    one-half of one Sanofi-Aventis Ordinary Share and the average of
    the high and low sales prices of one ADS was $37.50.
(3)
Calculated as the product of the proposed maximum
    aggregate offering price and 0.0001177.
PART I
INFORMATION REQUIRED IN THE
PROSPECTUS
Item 1.
Plan Information
Omitted pursuant to the instructions and
provisions of Form S-8.
Item 2.
Registrant Information and Employee Plan
    Annual Information
Omitted pursuant to the instructions and
provisions of Form S-8.
PART II
INFORMATION REQUIRED IN THE REGISTRATION
STATEMENT
Item 3.
Incorporation of Documents by
    Reference
This Registration Statement on Form S-8
hereby incorporates by reference the contents of the following
documents filed by Sanofi-Aventis (the "Registrant",
formerly known as Sanofi-Synthélabo) or by the Aventis
Pharmaceuticals Savings Plan, the Aventis Pasteur Inc. 401(k)
Plan, and the Aventis Pharmaceuticals Puerto Rico Savings Plan
(together, the "Plans") with the Securities and
Exchange Commission (the "Commission") pursuant to the
Securities Exchange Act of 1934, as amended (the "Exchange
Act"):
(a)     The Annual
Report on Form 20-F of the Registrant for the year ended
December 31, 2003 (Commission file No. 001-31368);
(b)     The Reports on
Form 6-K furnished by the Registrant (whether under the
names Sanofi-Synthélabo or Sanofi-Aventis) to the
Commission pursuant to Section 13(a) or 15(d) of the
Exchange Act on the following dates: January 7, 2004,
January 8, 2004, January 12, 2004, January 20,
2004, January 29, 2004, February 4, 2004,
February 16, 2004, March 9, 2004, March 10, 2004,
March 19, 2004, March 23, 2004, March 31, 2004,
April 5, 2004, April 12, 2004, April 13, 2004,
April 15, 2004, April 22, 2004, April 26, 2004,
April 27, 2004, May 4, 2004, May 5, 2004,
May 14, 2004, May 21, 2004, May 26, 2004,
June 2, 2004, June  4, 2004, June 14, 2004,
June 22, 2004, June 24, 2004, June 25, 2004,
July 15, 2004 (two reports), July 21, 2004,
July 29, 2004, August 2, 2004, August 9, 2004,
August 12, 2004, August 13, 2004, August 19,
2004, August 24, 2004, August 31, 2004,
September 7, 2004, September 14, 2004,
September 16, 2004, September 17, 2004, September 22
(two reports), October 8, 2004 (report relating to
Actonel® press release), October 14, 2004,
November 5, 2004 (report relating to Taxotere® and
Eloxatin® press releases); November 9, 2004;
November 24, 2004, November 26, 2004 (report relating
to press release regarding relocation of Aventis headquarters),
November 30, 2004, December 9, 2004 (report relating
to press release regarding U.S. intellectual property
litigation); December 10, 2004; December 16, 2004
(report relating to financial calendar of Sanofi-Aventis);
December 20, 2004; December 22, 2004 and
December 23, 2004;
(c)     The description
of the Registrant's ordinary shares, nominal
value
€
2 per
share, set forth under the captions "A. Share Capital"
and "B. Memorandum and Articles of Association" in
Item 10 of the Registrant's Registration Statement on
Form 20-F (Commission file No. 001-31368), filed with
the Commission on June 25, 2002 and the updated
descriptions of the Registrant's ordinary shares and
American depositary shares contained in the Post-Effective
Amendment No. 3 to the Registration Statement on
Form F-4 (Registration No. 333-112314) (the
"Form F-4") filed by the Registrant with the
Commission on November 9, 2004, under the captions
"Description Of Sanofi-Aventis Ordinary Shares" and
"Description Of Sanofi-Aventis American Depositary
Shares", including any amendment or report filed for the
purpose of updating such description;
(d) The most recent Annual Report on
Form 11-K filed with the Commission by each of the
Plans; and
(e) All documents filed by the Registrant
with the Commission pursuant to Sections 13(a),
13(c), 14, or 15(d) of the Exchange Act prior to the
filing of a post-effective amendment indicating that all
securities offered have been sold or that deregisters all
securities then remaining unsold shall be deemed to be
incorporated by reference in this Registration Statement and to
be a part hereof from the date of filing of such documents
reference. Statements contained in the foregoing documents
incorporated by reference shall be deemed to be modified or
superseded hereby to the extent that statements contained in the
Prospectus, or in any subsequently filed documents that are
amendments hereto or that are incorporated herein by reference,
shall modify or replace such statements.
Item 4.
Description of Securities
The information required by Item 4 is not
applicable to this Registration Statement because the class of
securities to be offered is registered under Section 12 of
the Exchange Act.
Item 5.
Interests of named Experts and
    Counsel
The information required by Item 5 is not
applicable to this Registration Statement.
Item 6.
Indemnification of Directors and
    Officers
The French Commercial Code prohibits provisions
of
statuts
that limit the liability of directors.
However, if a director is sued by a third party and ultimately
prevails in the litigation on all counts, but is nevertheless
required to bear attorneys' fees and costs, the company may
reimburse those fees and costs pursuant to an indemnification
arrangement with the director.
Under French law a company may purchase directors
and officers' insurance for all or part of the members of
its management. A French corporation is responsible to third
parties for the consequences of the decisions of its board of
directors. However, if those decisions qualify as mismanagement,
the relevant member of the board of directors may have to fully
or partly indemnify the company. Sanofi-Aventis has purchased
insurance for all of its directors.
Item 7.
Exemption from Registration Claimed
The information required by Item 7 is not
applicable to this Registration Statement.
Item 8.
Exhibits
Exhibit
Number
Description
4.1
Bylaws (
statuts
) of Sanofi-Aventis
    (incorporated herein by reference to Exhibit 3.1 of
    Post-Effective Amendment No. 2 to the Registration
    Statement on Form F-4 (Registration No. 333-112314) as
    filed by the Registrant with the Commission on October 15,
    2004)
4.2
Deposit Agreement (including the form of
    depositary receipt) between the Registrant and The Bank of New
    York, as depositary (incorporated herein by reference to
    Exhibit A to the Registration Statement on Form F-6
    (Registration No. 333-116262) relating to American
    Depositary Shares, filed on June 8, 2004)
23.1
Consent of Ernst & Young Audit to
    incorporation by reference of Independent Auditors' Report
23.2
Consent of PricewaterhouseCoopers Audit to
    incorporation by reference of Independent Auditors' Report
The Registrant will submit or has submitted the
Plans and any amendments thereto to the Internal Revenue Service
("IRS") in a timely manner for a determination whether
the Plans are qualified under Section 401 of the Internal
Revenue Code and has made or will make all changes required by
the IRS in order to so qualify the Plans.
Item 9.
Undertakings
(a)     The undersigned
Registrant hereby undertakes:
(1)     To file, during
any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement to
include any material information with respect to the plan of
distribution not previously disclosed in the Registration
Statement or any material change to such information in the
Registration Statement,
(2)     That, for the
purpose of determining any liability under the Securities Act,
each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered
therein, and the offering of such securities at that time shall
be deemed to be the initial
bona fide
offering thereof.
(3)     To remove from
registration by means of a post-effective amendment any of the
securities being registered that remain unsold at the
termination of the offering.
(b)     The undersigned
registrant hereby undertakes that, for purposes of determining
any liability under the Securities Act, each filing of the
Registrant's annual report pursuant to Section 13(a)
or Section 15(d) of the Exchange Act (and, where
applicable, each filing of an employee benefit plan's
annual report pursuant to Section 15(d) of the Exchange
Act) that is incorporated by reference in the Registration
Statement shall be deemed to be the initial
bona fide
offering thereof.
(c)     Insofar as
indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers, and controlling persons
of the Registrant pursuant to the provisions described in
Item 6 of this Registration Statement, or otherwise, the
registrant has been advised that in the opinion of the
Commission such indemnification is against public policy as
expressed in the Securities Act and is, therefore,
unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a director, officer,
or controlling person of the Registrant in the successful
defense of any action, suit, or proceeding) is asserted by such
director, officer, or controlling person in connection with the
securities being registered, the Registrant will, unless in the
opinion of its counsel the matter has been settled by
controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act and
will be governed by the final adjudication of such issue.
SIGNATURES
The Registrant.
Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe
that it meets all of the requirements for filing on
Form S-8 and has duly caused this registration statement to
be signed on its behalf by the undersigned, thereunto duly
authorized, in Paris, France, as of December 23, 2004.
SANOFI-AVENTIS
By:
/s/ JEAN-FRANÇOIS DEHECQ
Name:        Jean-François
    Dehecq
Title:
Chairman & Chief Executive Officer
POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each
person whose signature appears below hereby constitutes and
appoints Jean-François Dehecq, Jean-Claude Leroy and Dirk
Oldenburg as attorney-in-fact and agent, with full power of
substitution and resubstitution, to sign on his or her behalf,
individually and in any and all capacities, including the
capacities stated below, any and all post-effective amendments
to this Registration Statement and to file the same, with all
exhibits thereto, and other documents in connection therewith,
with the Securities and Exchange Commission, granting to each
said attorney-in-fact and agent, acting individually, full power
and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as
fully to all intents and purposes as he or she might or could do
in person, hereby ratifying and confirming all that said
attorney-in-fact and agent, or his substitute, may lawfully do
or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities
Act of 1933, as amended, this registration statement has been
signed below by the following persons in the capacities and on
the dates indicated:
Signature
Title
Date
/s/ JEAN-FRANÇOIS DEHECQ
Jean-François Dehecq
Chairman, Chief Executive Officer
and Director
(Principal Executive Officer)
December 23, 2004
/s/ JEAN-CLAUDE LEROY
Jean-Claude Leroy
Senior Vice President and Chief
Financial Officer
(Principal Financial Officer)
December 23, 2004
/s/ JEAN-LUC RENARD
Jean-Luc Renard
Vice President Corporate Accounting
and Tax
(Principal Accounting Officer)
December 23, 2004
/s/ RENÉ BARBIER DE LA SERRE
René Barbier de la Serre
Director
December 23, 2004
/s/ JEAN-MARC BRUEL
Jean-Marc Bruel
Director
December 23, 2004
Signature
Title
Date
/s/ ROBERT CASTAIGNE
Robert Castaigne
Director
December 23, 2004
/s/ THIERRY DESMAREST
Thierry Desmarest
Director
December 23, 2004
/s/ JÜRGEN DORMANN
Jürgen Dormann
Director
December 23, 2004
/s/ DOURO
Lord Douro
Director
December 23, 2004
/s/ JEAN-RENÉ FOURTOU
Jean-René Fourtou
Director
December 23, 2004
/s/ SERGE KAMPF
Serge Kampf
Director
December 23, 2004
/s/ IGOR LANDAU
Igor Landau
Director
December 23, 2004
/s/ HUBERT MARKL
Hubert Markl
Director
December 23, 2004
/s/ CHRISTIAN MULLIEZ
Christian Mulliez
Director
December 23, 2004
/s/ LINDSAY OWEN-JONES
Lindsay Owen-Jones
Director
December 23, 2004
/s/ KLAUS POHLE
Klaus Pohle
Director
December 23, 2004
/s/ HERMANN SCHOLL
Hermann Scholl
Director
December 23, 2004
/s/ GÉRARD VAN KEMMEL
Gérard Van Kemmel
Director
December 23, 2004
Signature
Title
Date
/s/ BRUNO WEYMULLER
Bruno Weymuller
Director
December 23, 2004
/s/ TIMOTHY ROTHWELL
Timothy Rothwell
Authorized Representative in the United States of
    America
December 23, 2004
SIGNATURES
The Plan.
Pursuant
to the requirements of the Securities Act of 1933, the Aventis
Pharmaceuticals Savings Plan has duly caused this registration
statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in Bridgewater, New Jersey, as of
December 23, 2004.
AVENTIS PHARMACEUTICALS SAVINGS PLAN
By:
AVENTIS PHARMACEUTICALS RETIREMENT
ADMINISTRATIVE COMMITTEE, Plan Administrator
By:
/s/ LINDA NILSEN
Linda Nilsen, Chairman
SIGNATURES
The Plan.
Pursuant
to the requirements of the Securities Act of 1933, the Aventis
Pharmaceuticals Puerto Rico Savings Plan has duly caused this
registration statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in Manati, Puerto Rico,
as of December 23, 2004.
AVENTIS PHARMACEUTICALS PUERTO RICO SAVINGS
    PLAN
By:
/s/ HELEN HEFNER
Helen Hefner, Plan Administrator
SIGNATURES
The Plan.
Pursuant
to the requirements of the Securities Act of 1933, the Aventis
Pasteur Savings Plan has duly caused this registration statement
to be signed on its behalf by the undersigned, thereunto duly
authorized, in Swiftwater, Pennsylvania, as of December 23,
2004.
AVENTIS PASTEUR INC. 401(k) PLAN
By:
/s/ DAMIAN BRAGA
Damian Braga, Plan Administrator
EXHIBIT INDEX
Exhibit
Number
Description of Document
4.1
Bylaws (
statuts
) of Sanofi-Synthelabo
    (incorporated herein by reference to Exhibit 3.1 of
    Post-Effective Amendment No. 2 to the Registration
    Statement on Form F-4 (Registration No. 333-112314) as
    filed by the Registrant with the Commission on October 15,
    2004)
4.2
Deposit Agreement (including the form of
    depositary receipt) between the Registrant and The Bank of New
    York, as depositary (incorporated herein by reference to
    Exhibit A to the Registration Statement on Form F-6
    (Registration No. 333-116262) relating to American
    Depositary Shares, filed on June 8, 2004)
23.1
Consent of Ernst & Young Audit to
    incorporation by reference of Independent Auditors' Report
23.2
Consent of PricewaterhouseCoopers Audit to
    incorporation by reference of Independent Auditors' Report