Reaxys - As of January 1, 2011, the Beilstein & Gmelin databases are only available via Reaxys. This database also includes patent information. It can be searched by text, structure or reaction.
Description
Beilstein deals with organic compounds while Gmelin deals with inorganic compounds.
Beilstein includes:
Close to 10 million compounds
Over 10 million reactions
Over 35 million associated chemical property and bio activity records on:
pharmacodynamics
environmental toxicology
transport
distribution
fate
Close to 2 million abstracts and titles indexed from the primary organic chemical literature since 1980