17-Hydroxy-7alpha-methyl-19-nor-17alpha-pregn-5(10)-en-20-yn-3-one 19-Norpregn-5(10)-en-20-yn-3-one, 17-hydroxy-7-methyl-, (7alpha,17alpha)- 5630-53-5 EINECS 227-069-1 TIBOLONE Tibolona [INN-Spanish] Tibolone [USAN:BAN:INN] Tibolonum [INN-Latin]