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chemicalRole

A Schema.org Property

This term is proposed for full integration into Schema.org, pending implementation feedback and adoption from applications and websites.
A role played by the BioChemEntity within a chemical context.
Values expected to be one of these types
DefinedTerm
Used on these types
ChemicalSubstance
MolecularEntity

Source

http://www.bioschemas.org/ChemicalSubstance