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

A summary of the relations in the Bioregistry schema can be found here.

In Collection
ChEBI Data Sources
Metaregistry ChemIDplus

The metaregistry provides mappings between the Bioregistry and other registries. There are 7 mappings to external registries for this resource with 4 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
Integbio Integbio logo integbio nbdc01837 logo miriam chemidplus
N2T Name-to-Thing logo n2t chemidplus
Prefix Commons Prefix Commons logo prefixcommons chemidplus

A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier 57-27-2 is used to demonstrate the providers available for ChemIDplus. A guide for curating additional providers can be found here.

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

Additional providers curated in the Bioregistry are listed here. These are typically inherited from or Prefix Commons, and need extra curation.

Code Name URL
bio2rdf Bio2RDF