SciFinder Scholar

The online version of Chemical Abstracts, with more than 34 million compounds. SciFinder covers 1907 to the present, plus selected pre-1907 items. Sources include journals, patents, conference proceedings, dissertations, technical reports, books, and more. SciFinder searches include the contents of MEDLINE and OLD MEDLINE. Searches can be done by by topic, author, CAS registry numbers, patent number, CAS abstract number, chemical name, chemical structure, or molecular formula.