Accelrys Nanotechnology Consortium Adds Seven Members, Delivers First Computer-Aided Nanodesign Software Solution.

SAN DIEGO -- Accelrys, Inc. (NASDAQ:ACCL), a leader in computer-aided nanodesign (CAN), today announced the addition of seven new members to the Accelrys Nanotechnology Consortium, as well as the introduction of ONETEP, the first consortium-developed software application. The Consortium brings together leaders from industry, government and academia in order to create software tools that speed up the design of nanomaterials and nanodevices. The new members include: Kyoto University, Millennium Chemicals (A Lyondell Company), R.J. Mears, CSIC of Spain and PPG Industries.

"We recognize the potential value of molecular modeling as a means of reducing the cost of new materials research," commented Bob Daniels, vice president of research and development at Lyondell Chemical Company. "Accelrys has created a collaborative nanotechnology forum where Lyondell's needs for specific modeling capabilities are being satisfied. We will deploy these tools to real-world problems to provide solutions that create a strategic advantage in an increasingly complex and competitive market."

"With the launch of the ONETEP software solution, the first deliverable against our target of increased accuracy, capabilities and performance across a broad range of nanoscale applications, the Consortium is well on its way to fulfilling the promise of furthering the rational design of nanomaterials and nanodevices," said Mark J. Emkjer, president and CEO of Accelrys. "With the Consortium's membership continuing to grow, we are well positioned to develop novel technologies that meet the needs of the scientists and engineers who are participating in and building the nanotech industry."

The Accelrys Nanotechnology Consortium is now 17 members strong. Current members include Corning Incorporated; Fujitsu; e2v Technologies; Imperial College, London; Uppsala University, Sweden; Johnson Matthey; Schenectady International; Fraunhofer IFAM; Fraunhofer IZM and the Japan Advanced Institute of Science and Technology.

The Consortium is an ongoing program, organized into phases of three years. The first phase runs from July 1, 2004 to August 31, 2007.

ONETEP: the first in a series

With ONETEP, the Accelrys Nanotechnology Consortium has delivered its first in a series of applications aimed at helping researchers investigate complex models of nanostructures and devices more quickly and efficiently.

ONETEP represents a breakthrough in high-precision calculations to probe the stability and behavior of nanoscale materials such as nanotubes, mixed bio-materials systems, and oxide nanoparticles. In addition to ONETEP, members have received new technology which delivers comprehensive property prediction capabilities for inorganic materials and complex structures pertinent to nanotechnology.

About Accelrys

Accelrys, Inc. (NASDAQ:ACCL) is a leading provider of software for computation, simulation, and the management and mining of scientific data used by biologists, chemists and materials scientists, including nanotechnology researchers for product design as well as drug discovery and development. Accelrys technology and services are designed to meet the needs of today's leading research organizations. The company is headquartered in San Diego, California. For more information about Accelrys, visit its website at http://www.accelrys.com/.

This press release contains forward-looking statements for purposes of the Private Securities Litigation Reform Act of 1995 (the "Act"). When used anywhere in this document, the words "expects," "believes," "anticipates," "estimates," and similar expressions are intended to identify forward-looking statements. Examples of such forward-looking statements herein include statements regarding the future success of the Nanotechnology Consortium and the adoption and success of ONETEP and other products developed as a result of the Consortium. Accelrys has based these forward-looking statements on its current expectations about future events. Such statements are subject to risks and uncertainties including, but not limited to, the risk that the consortium will not achieve the intended success, or that any products developed as a result thereof will not be successfully completed or achieve market acceptance, and other risks and uncertainties described in documents Accelrys has filed with the Securities and Exchange Commission, including its most recent report on Form 10-Q. All forward-looking statements in this document are qualified entirely by the cautionary statements included in this document and such filings. These risks and uncertainties could cause actual results to differ materially from results expressed or implied by forward-looking statements contained in this document. These forward-looking statements speak only as of the date of this document. Accelrys claims the protection of the safe harbor for forward-looking statements contained in the Act and, disclaims any intent or obligation to publicly update or revise any forward-looking statements contained herein to reflect any change in its expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based.