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Publication coverage: 1800s - present (varies by country; updated weekly)Explore 66 million patent documents from more than 51 regional and national patent offices. Major national collections include Canada, China, European Patent Office, Japan, Korea, Russia, U.K. and U.S. Advanced functions include chemical structure and biological sequence search; cross-lingual translation search; and national status information.
Publication coverage: 1946 –PubMed is a free resource supporting the search and retrieval of biomedical and life sciences literature with the aim of improving health–both globally and personally. The PubMed database contains more than 33 million citations and abstracts of biomedical literature. It does not include full text journal articles; however, links to the full text are often present when available from other sources, such as the publisher's website or PubMed Central (PMC).
Publication coverage: 1907 - present; 100,000+ selected publications from the early 1800s through 1907.SciFinder-n® is the world's most comprehensive source of information on chemical substances and technology. Produced by the Chemical Abstracts Service (CAS), a division of the American Chemical Society (ACS), SciFinder-n® provides access to chemical names, structures, properties, spectra, and reactions for more than 196 million organic and inorganic substances and approximately 70 million protein and nucleic acid sequences. SciFinder-n® covers 10,000+ current and historical journals, patents from 64 patent issuing authorities, and MEDLINE, the biomedical literature database. It also indexes selected books, conference proceedings, theses, reference works, technical reports, and preprints. As of 2022, SciFinder-n contains more than 57 million literature references dating back to the 1800s. Commercial chemical supplier and regulatory information is also available.