Lacidipine BP Impurity C

(5Z)-7-[(1R, 2R, 3R, 5S)-3, 5-Dihydroxy-2-[(3R)-3-hydroxy-5-phenylpentyl]cyclopentyl]-5-heptenoic Acid; 13, 14-Dihydro-17-phenyl-18, 19, 20-trinor-PGF2?; PhXA 85; USP Latanoprost Related Compound E;