CAS (Chemical Abstracts Service) is a division of the American Chemical Society and is the producer of comprehensive databases of chemical information.

Prefix
cas
Alternative Prefixes
SECONDARY_CAS_RN CAS_RN cas_id CASID
Keywords
chemical chemical entity cheminformatics structure
Links
Homepage
Contact
Andrea Jacobs   0000-0001-9316-9400
Pattern for Local Unique Identifiers

Local identifiers in CAS Registry Number should match this regular expression:
^\d{1,7}\-\d{2}\-\d$

Example Local Unique Identifier
50-00-0   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from CAS Registry Number should match this regular expression:
^cas:\d{1,7}\-\d{2}\-\d$

Example CURIE
cas:50-00-0
Publications
2022 CAS Common Chemistry in 2021: Expanding Access to Trusted Chemical Information for the Scientific Community
Metaregistry CAS Registry Number

The metaregistry provides mappings between the Bioregistry and other registries. There are 10 mappings to external registries for this resource with 6 unique external prefixes.

Registry Name Registry Metaprefix External Prefix Curate
BioContext biocontext CAS
CHEMINF cheminf 000446
EDAM EDAM Ontology logo edam 1002
FAIRSharing FAIRSharing logo fairsharing FAIRsharing.r7Kwy7
GO Gene Ontology Registry logo go CAS
HL7 HL7 External Code Systems logo hl7 2.16.840.1.113883.6.61
Identifiers.org Identifiers.org logo miriam cas
N2T Name-to-Thing logo n2t cas
Prefix Commons Prefix Commons logo prefixcommons cas
Wikidata Wikidata Property logo wikidata P231
Providers

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 50-00-0 is used to demonstrate the providers available for CAS Registry Number. A guide for curating additional providers can be found here.

Name Metaprefix URI
CAS Registry Number cas https://commonchemistry.cas.org/detail?cas_rn=50-00-0
Bioregistry bioregistry https://bioregistry.io/cas:50-00-0
Identifiers.org miriam https://identifiers.org/cas:50-00-0
Name-to-Thing n2t https://n2t.net/cas:50-00-0
Extra Providers

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

Code Name URL
bio2rdf Bio2RDF http://bio2rdf.org/cas:50-00-0
hoelzel Hölzel Diagnostika https://www.hoelzel-biotech.com/de/casinfo/cas/index/number/50-00-0
scholia Scholia https://scholia.toolforge.org/cas/50-00-0