Genomics : Small Molecules

Focuses on "small" chemical compounds, defined as any constitutionally or isotopically distinct atom, molecule, ion, ion pair, radical, radical ion, complex, conformer, etc., identifiable as a separately distinguishable entity. All compounds are either products of nature or synthetic products used to intervene in the processes of living organisms.

ChemSpider is a chemistry search engine that aggregates and indexes chemical structures and their associated information into a single searchable repository.

Contains supplier information for >8 million unique chemicals. eMolecules obtains chemical data by searching the Internet, and receiving submissions from data providers such as chemical suppliers.

Contains chemical substances and reactions that are relevant to biological systems. It is a composite database consisting of COMPOUND, GLYCAN, REACTION, RPAIR, and ENZYME databases.

Contains bioactivity screens of chemical substances described in PubChem Substance. It provides searchable descriptions of each BioAssay, including descriptions of the conditions and readouts specific to a screening protocol.

Contains non-redundant, standardized and validated chemical structures extracted from deposited substances in PubChem Substance. A PubChem Compound record will link to more than one PubChem Substance record if different depositors supplied the same structure.

Contains chemical structures, synonyms, registration IDs, description, related urls, database cross-reference links to PubMed, protein 3D structures, and biological screening results. PubChem Substance records contain substance information electronically submitted to PubChem by depositors.

Repository for data from NMR Spectroscopy on proteins, peptides, nucleic acids, and other biomolecules.