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).
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?
chembl.assayA 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 |