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 5 mappings to external registries for this resource with 2 unique external prefixes.

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 RYYVLZVUVIJVGH-UHFFFAOYSA-N is used to demonstrate the providers available for InChIKey. A guide for curating additional providers can be found here.

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