Search The Directory The Web for Home > Science > Chemistry > Organic > Databases > Free New! Submit a site   whatUseek Collection Sites (submit a site ):   Give your site great placement in this category in as little as two business days!     whatUseek Directory Site Listings:   Abbreviations of Chemical Compounds - searchable.   Acronym Database Search - Acronyms related to chemistry.   ChemExper Chemical Directory - A free service that allows to find a chemical by its molecular formula, IUPAC name, common name, CAS number, catalog number, substructure or physical characteristics. One may also submit data.   ChemFinder Searching - An index to chemical information on the Internet, with structures and physical properties, searchable by name, structure, CAS Number, and physical properties.   ChemWeb Conference Diary - Details of hundreds of chemistry related meetings worldwide.   Chemsoc Conference and Events Database - A comprehensive, fully searchable database of events, large and small, around the world. The free online submission form makes it easy for organizers to publicize their events free of charge.   Conversion of Units - Database of conversion factors and a conversion calculator.   Ecdin Databank - This database is searchable by CAS number, name and chemical formula. A very valuable resource, especially if you are interested in the biological activity and toxicity of a compound.   Esp@cenet - The European Patent Office - Free search of worldwide patents.   Medline - Huge database of health related issues. Search includes CAS number, very useful if you are looking for toxicity of your compounds. Accessible via ChemWeb on http://www.chemweb.com/databases/medline/display.exe (useful for CAS searches)   NIST WebBook - NIST site provides chemical and physical property data on over 30,000 compounds (MS, IR, ...).   SPECS and BioSPECS B.V. - Provider of synthetic organic compound library's for HTS in vials or plates.   USPTO Web Patent Databases - Freely searchable US Patent full text database, US Patent bibliographic database, AIDS Patent database (a database of the full text and images of selected AIDS-related patents issued by the US, Japanese and European patent offices).   WWW Chemicals - A large variety of small lots of variuous chemicals. Help build the largest human-edited directory on the web.   Submit a Site - Open Directory Project - Become an Editor

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