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Chemistry
Structure and Imaging Information
ChemIDplus
ChemIDplus - provided by the National Library of Medicine provides access to structure and nomenclature authority files used for the identification of chemical substances cited in National Library of Medicine (NLM) databases. ChemIDplus also provides structure searching and direct links to many biomedical resources at NLM and on the Internet for chemicals of interest. The database contains over 350,000 chemical records, of which over 80,000 include chemical structures, and is searchable by Name, Synonym, CAS Registry Number, Molecular Formula, Classification Code, Locator Code, and Structure. Very helpful factsheet which should be checked before using ChemIDplus
SPRESI Structural Database
SPRESI Structural Database - contains about 4 million organic and organometallic compounds and data, 700,000 stereoisomers and over 3 million journal article references taken from the worldwide literature of the period 1975-current. This is a pay per use site
