ChemIDplus is a web-based search system that provides access to structure and nomenclature authority files used for the identification of chemical substances cited in National Library of Medicine (NLM) databases. It also provides structure searching and direct links to many biomedical resources at NLM and on the Internet for chemicals of interest.

Alternative Prefixes
biomedical science chemistry molecules structure
Missing Contact
Pattern for Local Unique Identifiers

Local identifiers in ChemIDplus should match this regular expression:

Example Local Unique Identifier
57-27-2   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from ChemIDplus should match this regular expression:

Example CURIE
2002 ChemIDplus-super source for chemical and drug information.
In Collection
ChEBI Data Sources
Metaregistry ChemIDplus

The metaregistry provides mappings between the Bioregistry and other registries. There are 6 mappings to external registries for chemidplus with 3 unique external prefixes.

Registry Name Registry Metaprefix External Prefix Curate
BioContext biocontext CHEMIDPLUS
EDAM EDAM Ontology logo edam 2658
FAIRSharing FAIRSharing logo fairsharing FAIRsharing.5949vn logo miriam chemidplus
N2T Name-to-Thing logo n2t chemidplus
Prefix Commons Prefix Commons logo prefixcommons chemidplus

Providers are various services that resolve CURIEs to URLs. The example CURIE chemidplus:57-27-2 is used to demonstrate the provides available for chemidplus. Generation of OLS and BioPortal URLs requires additional programmatic logic beyond string formatting.

Name Metaprefix URI
ChemIDplus chemidplus
Bioregistry bioregistry miriam
Name-to-Thing n2t
Extra Providers

Additional providers curated in the Bioregistry are listed here.

Code Name URL
bio2rdf Bio2RDF