Isovalerylglycine (IVG) is an acyl glycine. Acyl glycines are normally minor metabolites of fatty acids. However the excretion of certain acyl glycines is increased in several inborn errors of metabolism. In certain cases the measurement of these metabolites in body fluids can be used to diagnose disorders associated with mitochondrial fatty acid beta-oxidation.

Pronase E is a mixture of proteolytic enzymes that is obtained from Streptomyces griseus and could digest protein into individual amino acids.

Prasugrel hydrochloride is a piperazine derivative and pletelet aggregation inhibitor that is used to prevent thrombosis in patients with acute coronary syndrome.