A CD-ROM edition of Index Chemicus (a so-called"Current Contents" for synthetic compounds) has been launched this year. Index Chemicus on CD(IC-CD)features an easy-to-use search option for both Text and Structures, as well as combination search capability. For text search, 19 searchable fields are available(13 at the article level &6at the compound level). Biological activity & Class of compound are indexed as controlled vocabulary. Substructure searches can be done by either drawing an extract or by selecting one from any known substance. For easy drawing, some 70 shortcuts are provided, including isolated and aromatic ring systems, as well as functional groups. Pull down options for Atom selection, Bond selection and the Periodic table are also provided.
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