81703-55-1 9-beta-Methylcarbacyclin CIPROSTENE CALCIUM Calcium (Z)-(3aS,5R,6R,6aR)-hexahydro-5-hydroxy-6-((E)-(3S)-3-hydroxy-1-octenyl)-3a-methyl-delta(sup 2)(1H),delta-pentalenevalerate (1:2) Ciprostene calcium [USAN] Pentanoic acid, 5-(hexahydro-5-hydroxy-6-(3-hydroxy-1-octenyl)-3a-methyl-2(1H)-pentalenylidene)-, calcium salt (2:1), (3aS-(2Z,3aalpha,5beta,6alpha(1E,3R*),6aalpha))- U 61431F