<PAGE>
POWER OF ATTORNEY
[ORIGINAL IN FRENCH]
I, undersigned, Jean-Claude BRAVARD, Deputy President, President of the Fine
Organics Division, Supervisor of the Research & Innovation and Industrial
Property of RHODIA, a French Societe Anonyme with a registered share capital of
(Euro)2,621,115,615.00, with headquarters located at F-92512
Boulogne-Billancourt - 26, Quai Alphonse Le Gallo, registered with the Trade
Registry of Nanterre under number 352 170 161,
Acting upon the powers granted to me on July 23, 2000 by Jean-Pierre TIROUFLET,
Chairman of the Board of Rhodia, in connection with the cash acquisition of
ChiRex, Inc. by Rhodia,
Hereby grants Michel Marien, President of the Life Science Chemicals Enterprise,
The power to negotiate and sign any and all agreements, documents and/or any and
all requests for approval and to carry on any and all actions, submissions and
filings required by any and all governmental authorities and/or regulatory
bodies, including the Securities and Exchange Commission (SEC), in order to
implement the foregoing transaction.
Made in Boulogne on July 28, 2000
/s/ Jean-Claude BRAVARD
Deputy President, President of the Fine
Organics Division, Supervisor of the
Research & Innovation and Industrial
Property of RHODIA
