S-acetoacetylcoenzyme A

Acetoacetyl coenzyme A (Acetoacetyl-CoA) may be used as a substrate for a number of enzymes including; acetoacetyl-CoA thiolase (EC 2.3.1) which produces acetyl-CoA in reverse condensation reaction and (3-Hydroxy-3-methylglutaryl coenzyme A (CoA) synthase (HMGCS)) which produces 3-hydroxy-3-methylglutaryl (HMG)-CoA in the mevalonate pathway leading to terpenoid biosynthesis. Acetoacetyl-CoA is also a precursor of poly-beta-hydroxybutyrate polymers in microorganisms.

ChEBI: A 3-oxoacyl-CoA that results from the formal condensation of the thiol group of coenzyme A with the carboxy group of acetoacetic acid.