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Search and explore chemical information in the world's largest free chemistry database. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more.
PubChem is a database of chemical molecules and their activities against biological assays. The system is maintained by the National Center for Biotechnology Information (NCBI), a component of the National Library of Medicine, which is part of the United States National Institutes of Health (NIH).
PubChem Structure Search allows the PubChem Compound Database to be queried by chemical structure or chemical structure pattern.
PubChem Compound records are derived summaries that give users access to a rich set of related content. Compound records contain unique chemical structures extracted from contributed Substance records through standardization.
Nov 4, 2022 · What is PubChem? Created in 2004 to serve as a repository for the NIH Molecular Libraries Program. World's largest collection of freely accessible chemical information. Key chemical information resource for scientists, students, and the public. What is in PubChem? Small molecules. Larger molecules, such as: Nucleotides. Carbohydrates. Lipids.
PubChem consists of three inter-linked databases, Substance, Compound and BioAssay. The Substance database contains chemical information deposited by individual data contributors to PubChem, and the Compound database stores unique chemical structures extracted from the Substance database.
Find chemical information using chemical names, identifiers, structures, molecular formulas, gene symbols, proteins, pathways, taxons, cell lines, and patent numbers. Identify the academic, governmental, or industrial sources that contribute data to PubChem.
