monounsaturated fatty acyl-CoA methyl-branched fatty acyl-CoA long-chain fatty acyl-CoA trans-2-enoyl-CoA (E)-isoheptadec-2-enoyl-CoA(4-) (E)-isoheptadec-2-enoyl-CoA A methyl-branched fatty acyl-CoA obtained from the formal condensation of the thiol group of coenzyme A with the carboxy group of (E)-isoheptadec-2-enoic acid. 11,12-saturated fatty acyl-CoA