17-phenyltrinorProstaglandin F2α (17-phenyltrinor PGF2α) is a metabolically stable analog of PGF2α and is a potent agonist for the FP receptor, binding with a relative potency of 756% compared to that of PGF2α. The ethyl amide of 17-phenyltrinor PGF2α bimatoprost has been approved for use as an ocular hypotensive drug. 17-phenyltrinor PGF2α methylamide is an analog of bimatoprost. Its biological and toxicological properties have not been evaluated.