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.

Prefix

inchikey

Links

Homepage

Contact

Missing Contact

Pattern for Local Unique Identifiers

Local identifiers in InChIKey should match this regular expression:
^[A-Z]{14}\-[A-Z]{10}(\-[A-Z])$

Example Local Unique Identifier

RYYVLZVUVIJVGH-UHFFFAOYSA-N   Resolve

Pattern for CURIES

Compact URIs (CURIEs) constructed from InChIKey should match this regular expression:
^inchikey:[A-Z]{14}\-[A-Z]{10}(\-[A-Z])$

Example CURIE

inchikey:RYYVLZVUVIJVGH-UHFFFAOYSA-N

The metaregistry provides mappings between the Bioregistry and other registries. There are 4 mappings to external registries for inchikey with 2 unique external prefixes.

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.