Supplier of advanced chemicals for high throughput screening, combinatorial chemistry, and other drug discovery applications. The chemical database is available online along with a full download in sdf format.

A catalog of 60000 fine chemicals searchable for free using a chemist-friendly search engine.

Online access to major chemical reference works from Chapman and Hall/CRC including Combined Chemical Dictionary (CCD), The Handbook of Chemistry and Physics, Polymers: A Property Database, Properties of Organic Compounds.

Free chemistry search engine which aggregates and indexes chemical structures and their associated information into a single searchable repository.

Database of thermodynamic and transport properties of pure components and mixtures for use in process design and development and related software package.

News, stock reports, products, directories, classifieds, and profiles of commercially available chemical products; focus reports;

Small molecule database of structures that have primarily been determined using single crystal X-ray diffraction. Features JAVA applets that can be used to orient and examine the molecule, and a dedicated Beowulf computer system to generate high quality

A not-for-profit scientific information service organization featuring, in particular, chemical expertise.

Database of organic chemistry compounds, organized by species. Contains chemical and physical property data on over 30,000 compounds.

Free electronic version of printed Organic Syntheses series - detailed reliable experimental methods for the synthesis of organic compounds.

Free database of chemical structures of small organic molecules and information on their biological activities. Linked with NIH PubMed/Entrez information retrieval system.

Distributed database used by research crystallographers to store information about 3D molecular structures.

ATR, FT IR, and Raman Spectra of chemicals and other compounds. Includes polymers, solvents, forensics.

Free interactive database of practical and reliable organic, organometallic and inorganic chemical syntheses submitted by synthetic chemists.