Gymnemic acid I is a protein biosynthesis inhibitor, it as antisweet principles.

Ac-Arg-Gly-Lys-AMC is a fluorogenic substrate for the determination of protease activity. Ac-Arg-Gly-Lys-AMC undergoes hydrolysis and releases the fluorescent product 7-amino-4-methylcoumarin (AMC). AMC is fluorescent under UV light and can emit a fluorescent signal.

4’-Bromomethyl-2-cyanobiphenyl is a halogenated benzonitrile used in protein-binding studies of quinoxaline angiotensin II receptor antagonists.