ClassyFire is a web-based application for automated structural classification of chemical entities. This application uses a rule-based approach that relies on a comprehensible, comprehensive, and computable chemical taxonomy. ClassyFire provides a hierarchical chemical classification of chemical entities (mostly small molecules and short peptide sequences), as well as a structure-based textual description, based on a chemical taxonomy named ChemOnt, which covers 4825 chemical classes of organic and inorganic compounds. Moreover, ClassyFire allows for text-based search via its web interface. It can be accessed via the web interface or via the ClassyFire API.


There's a mismatch between the MIRIAM URI format string, which has a C prefix in front of class identifiers and the ontology which does not use them.

Alternative Prefixes
Homepage OBO
Missing Contact
Pattern for Local Unique Identifiers

Local identifiers in ClassyFire should match this regular expression:

Example Local Unique Identifier
0004828   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from ClassyFire should match this regular expression:

Example CURIE
Metaregistry ClassyFire

The metaregistry provides mappings between the Bioregistry and other registries. There are 1 mappings to external registries for classyfire with 1 unique external prefixes.

Registry Name Registry Metaprefix External Prefix Curate logo miriam classyfire

Providers are various services that resolve CURIEs to URLs. The example CURIE classyfire:0004828 is used to demonstrate the provides available for classyfire. Generation of OLS and BioPortal URLs requires additional programmatic logic beyond string formatting.

Name Metaprefix URI
ClassyFire classyfire
Bioregistry bioregistry miriam