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

Keywords

compound

Links

Homepage

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

Contact

Missing Contact

Identifier Space Owner

Royal Society of Chemistry, Cambridge

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

Provided By

datanator.metabolite

In Collection (1)

Synapse.org external links

Mappings from records in Bioregistry to external registries comprises the metaregistry. This resource has 6 mappings to external registries with 3 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. Some providers may use a different example, which is displayed in the table below. 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.