Factors that could cause actual results to differ materially from the forward-looking statements contained herein include, but are not limited to: any unanticipated operational or cultural difficulties associated with the integration of the businesses of Accelrys and Symyx may cause the combined company not to achieve the synergies Symyx currently expects; litigation or adverse judgments relating to the proposed merger may delay or prevent the closing of the merger; and other risks relating to the consummation of the contemplated merger, including the risk that the closing conditions may not be satisfied which may delay or prevent the closing of the merger. Additional factors that could cause actual results to differ materially from those described in the forward-looking statements are set forth in Symyx’s Current Report on Form 10-Q for the quarter ended March 31, 2009, which was filed with the Securities and Exchange Commission (“SEC”) on May 3, 2009, under the heading “Item 1A -- Risk Factors,” in the Annual Report on Form 10-K of Accelrys for the year ended March 31, 2010, which was filed with the SEC on May 28, 2010, under the heading “Item 1A – Risk Factors,” and in the Prospectus/Proxy Statement filed by Accelrys with the SEC on May 19, 2010, under the heading “Risk Factors” beginning on page 34.Important Merger Information and Additional Information and Where to Find It This communication is being made in respect of the proposed business combination involving Accelrys and Symyx. In connection with the proposed merger, Accelrys has filed a registration statement on Form S-4 containing a joint proxy statement/prospectus of Accelrys and Symyx. Investors and security holders are urged to carefully read the Registration Statement on Form S-4 and related joint proxy statement/prospectus and other documents filed with the SEC by Accelrys and Symyx, because they contain important information about Accelrys, Symyx and the proposed transaction, including with respect to risks and uncertainties that could delay or prevent the completion of the transaction. Investors and security holders may obtain free copies of these documents and other documents filed with the SEC free at the SEC’s website, www.sec.gov and by directing a request when such a filing is made to Accelrys, Inc., 10188 Telesis Court, San Diego, California 92121-1761, Attention: Corporate Secretary or by directing a request when such a filing is made to Symyx Technologies, Inc., 3100 Central Expressway, Santa Clara, California 95051, Attention: Corporate Secretary. Investors and security holders may obtain free copies of the documents filed with the SEC on Accelrys’s website at www.Accelrys.com or Symyx’s website at www.Symyx.com or the SEC’s website at www.sec.gov. Accelrys, Symyx and their respective directors and executive officers may be considered participants in the solicitation of proxies in connection with the proposed transaction. Information regarding the interests of these directors and executive officers in the proposed transaction is included in the joint proxy statement/prospectus described above. Additional information about the directors and executive officers of Accelrys is set forth in Accelrys' most recent definitive proxy statement, which was filed with the SEC on July 21, 2009. Additional information about the directors and executive officers of Symyx is set forth in Symyx's most recent definitive proxy statement, which was filed with the SEC on April 29, 2009.