Synonyms: Estra-1,3,5(10)-triene-3,16,17-triol,16,17-bis(hydrogen butanedioate), disodium salt, (16a,17b)- (9CI); Estriol, 16,17-bis(hydrogen succinate), disodium salt (7CI,8CI);Succinic acid, 16,17-diester with estriol, disodium salt (8CI); Crestar; Org491; Orgastyptin; Sodium estriol 16a,17b-disuccinate; Styptanon; Synapause