Synonyms: U 53,217A;Epoprostenol sodium;Epoprostenol sodium [USAN:BAN];sodium (5Z)-5-[(1S,3R,4S,5R)-3-hydroxy-4-[(E,3S)-3-hydroxyoct-1-enyl]-8-oxabicyclo[3.3.0]oct-7-ylidene]pentanoate;sodium 5-[(1S,3R,4S,5R)-3-hydroxy-4-[(3S)-3-hydroxyoct-1-enyl]-8-oxabicyclo[3.3.0]oct-7-ylidene]pentanoate;Flolan;Epoprostenol sodium (JAN/USAN);Prosta-5,13-dien-1-oic acid,6,9-epoxy-11,15-dihydroxy-,monosodium salt,(5Z,9R,11R,13E,15S)-;Sodium (Z)-(3aR,4R,5R,6aS)-hexahydro-5-hydroxy-4-((E)-(3S)-3-hydroxy-1-octenyl)-2H-cyclopenta(b)furan-delta(sup 2,delta)-valerate;Epoprosterol sodium;5-[(1S,3R,4S,5S)-3-hydroxy-4-[(E,3S)-3-hydroxyoct-1-enyl]-8-oxabicyclo[3.3.0]oct-7-ylidene]pentanoate;Cyclo-Prostin;Sodium (5Z,13E,15S)-6,9alpha-epoxy-11alpha,15-dihydroxyprosta-5,13-dien-1-oate;Prosta-5,13-dien-1-oic acid, 6,9-epoxy-11,15-dihydroxy-, sodium salt, (5Z,9alpha,11alpha,13E,15S)-;Flolan (TN);