Chemistry:(Want to be listed here, contact us now!)
ChemBank - Initiative for Chemical Genetics. Freely available collection of data about small molecules (over 2000 compounds) and resources for studying their properties, especially their effects on biology.
The ChemExper Chemicals Directory - A catalog of 60000 fine chemicals searchable for free using a chemist-friendly search engine. Products are listed with physical data including IR spectra and MSDS. Contributions to the database possible with dedicated (and free) program.
ChemExpo - News, stock reports, products, directories, classifieds, and profiles of commercially available chemical products; focus reports
Chemfinder Chemical Directory - Directory of chemicals, physical properties, and Internet links.
Chemical Abstracts Service (CAS) - CAS databases provide access to over 25 million documents, 26 million chemical substances, and 56 million sequences.
Chemical Port Chemical related information site.
Hazardous Chemical Database - Contains names, formulas and registry numbers for 1991 hazardous chemicals. This site was last updated in 1996.
Query Chem - Chemical search engine powered by the Google Web API.
Gelacs Innovation - The supplier of peptide and API.