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Chemistry: Chemistry Search Engines

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ChemSpider
Search chemical information on the web by substance name, structure and properties.
ChemXSeer
Beta search engine for searching chemistry data and properties in published articles and websites.
Common Chemistry Beta
Chemical Abstracts Service (CAS)
Common Chemistry is a CAS Registry Number lookup service. Users may search by chemical name or registry number to find general information on approximately 7,800 compounds of interest to the public.
eMolecules
Search suppliers and information for more than 10 million chemical substances.
Provides information on the biological activities of small molecules.
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Last Updated: 08 February 2010