Publishes searchable chemical structures, deposited substance records and bioassay results through PubChem. The NCBI page distinguishes these resources and offers search and download tools. A database entry does not by itself establish a material’s grade, supplier quality or fitness for pharmaceutical use. PubChem is a service of NCBI within the National Library of Medicine and NIH. Geography: Bethesda, Maryland, United States; online international resource.

Develops measurement methods, reference materials and reference data for biomolecules. Its Biomolecular Measurement Division studies proteins, nucleic acids, peptides, glycans, metabolites and lipids with industry and research partners. This evidence establishes measurement support, not certification of an ingredient supplier or acceptance of every commercial assay. Geography: United States; international research partnerships.

Maintains ChEBI, a reference resource that identifies chemicals and describes how they relate to one another. It covers natural and synthetic molecules and links records to sources. Genome-encoded macromolecules generally fall outside its scope, and records have different curation levels. ChEBI is an EMBL-EBI service, not a separate organization. Geography: EMBL-EBI, United Kingdom; online international resource.

Output: Research Data & Methods Outputs.

Reference records for researchers and suppliers.

Read the source for scope and details.

Read the source for scope and details.

Read the source for scope and details.

Read the source for scope and details.

Read the source for scope and details.