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SciFinder contains Chemical Abstracts, CASREACT chemical reactions database, Chemical Abstracts Registry File, and Medline.
The CAplus covers literature from 1907 to the present and is updated daily. The database also contains the full CAS Registry file (from 1947 onwards) containing the structures and dictionary information for substances identified by the CAS Registry System.
The Medline database covers biomedical literature from 1958 to the present.