The IUPAC International Chemical Identifier (InChI, see MIR:00000383) is an identifier for chemical substances, and is derived solely from a structural representation of that substance. Since these can be quite unwieldly, particularly for web use, the InChIKey was developed. These are of a fixed length (25 character) and were created as a condensed, more web friendly, digital representation of the InChI.
Local identifiers in InChIKey should match this
Compact URIs (CURIEs) constructed from InChIKey should match
this regular expression:
The metaregistry provides mappings between the Bioregistry and other registries. There are
5 mappings to external registries for
|Registry Name||Metaprefix||External Prefix|
Providers are various services that resolve CURIEs to URLs. The example CURIE
inchikey:RYYVLZVUVIJVGH-UHFFFAOYSA-N is used to demonstrate the provides available for
inchikey. Generation of OLS and BioPortal URLs requires additional programmatic
logic beyond string formatting.
Additional providers curated in the Bioregistry are listed here.