13,14-Didehydro-20-methylcarbo-pgi2 13,14-Didehydro-20-methylcarboprostacyclin 78542-68-4 Fce 21292 Fce 22176 Fce 22509 Fce-21292 Pentanoic acid, 5-(hexahydro-5-hydroxy-4-(3-hydroxy-1-nonynyl)-2(1H)-pentalenylidene)-, (3aS-(2E,3aalpha,4alpha(R*),5beta,6aalpha))-