SciFinder provides access to CAplus, a database of chemical literature and U.S. and foreign chemical-related patents, CASREACT, and the Registry database from Chemical Abstracts Service. Includes journal articles, book chapters, patents, conference proceedings, technical reports, substance database and dissertations covered in Chemical Abstracts as well as articles currently being indexed, book reviews and biographical information. Covers chemistry, biotechnology, agricultural chemistry, toxicology, environmental science, medicine, and food science, from 1907 to the present. Users may search more than 27 million citations by topic, author, CAS Registry Numbers, patent number, and CAS abstract number. More than 33 million chemical substances may be searched by chemical name, chemical structure, substructure, CAS Registry Numbers, and formula.