ChEMBL assays describe the experimental set-up when testing the activity of drug-like compounds against biological targets; they provide useful context for researchers interested in drug-target relationships (https://chembl.blogspot.com/2023/12/in-search-of-perfect-assay-description.html).

Comment

Not sure what your choices might be regarding ChEMBL and its possible sub-prefixes. The ChEMBL RDF publication at PMC3700754 describes the prefix as assay, not chembl.assay, and declares http://linkedchemistry.info/chembl/assay/ which is nowhere in current ChEMBL or PubChem releases (I think it might be from Bio2RDF). ChEMBL 36 only the form http://rdf.ebi.ac.uk/resource/chembl/assay/$1 is used (also in pubchem.bioassay via seeAlso). The example at http://bioregistry.io/registry/chembl is an assay (https://www.ebi.ac.uk/chembl/id_lookup/CHEMBL4303805). At the same time there is a https://bioregistry.io/registry/chembl.compound page, specific for compounds. What are the choices regarding ChEMBL and its parts?

Prefix
chembl.assay
Keywords
chemical information systems
License
CC-BY-SA-3.0
Links
Homepage Request Discussion
Publications
2023 The ChEMBL Database in 2023: a drug discovery platform spanning multiple bioactivity data types and time periods
2018 ChEMBL: towards direct deposition of bioassay data
2013 The ChEMBL database as linked open data
Identifier Standards
Pattern for Local Unique Identifiers
Local unique identifiers in ChEMBL assay should match this regular expression:
^CHEMBL\d+$
Example Local Unique Identifier
CHEMBL4303805   Resolve
Pattern for CURIES
Compact URIs (CURIEs) constructed from ChEMBL assay should match this regular expression:
^chembl\.assay:CHEMBL\d+$
Example CURIE
chembl.assay:CHEMBL4303805
Format String for RDF URIs
http://rdf.ebi.ac.uk/resource/chembl/assay/$1
Example RDF URI
http://rdf.ebi.ac.uk/resource/chembl/assay/CHEMBL4303805
Ontology

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

Part Of (bfo:0000050 )
chembl
Providers

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 CHEMBL4303805 is used to demonstrate the providers available for ChEMBL assay. Some providers may use a different example, which is displayed in the table below. A guide for curating additional providers can be found here.

Provider Name Provider Code URI
ChEMBL assay (RDF) rdf http://rdf.ebi.ac.uk/resource/chembl/assay/CHEMBL4303805
Bioregistry bioregistry https://bioregistry.io/chembl.assay:CHEMBL4303805