(±) 8 (9) -EE-14 (Z) -E

(±) 14 (15) -EE-8 (Z) -E is a potent vasodilator in bovine coronary arteries. The synthesis of this analog involves the formation of the epoxide at the 14,15-double bond, however, epoxidation can also occur at the 8,9-double bond. (±) 8 (9) -EE-14 (Z) -E is a minor product from the synthesis of (±) 14 (15) -EE-8 (Z) -E. This compound has not been reported in the literature, and its biological activity is not known. It may serve as a tool to verify that the parent compound, (±) 14 (15) -EE-8 (Z) -E, is pure and does not contain the 8,9-epoxy regioisomer.