17alpha-Dihydroequilenin 6639-99-2 73088-21-8 EINECS 229-650-5 ESTRA-1,3,5(10),6,8-PENTAENE-3,17-DIOL (17ALPHA) Estra-1,3,5(10),6,8-pentaene-3,17alpha-diol (8CI) Estra-1,3,5,7,9-pentaene-3,17alpha-diol NSC 12171 alfa-Dihydroequilenina [Spanish] alpha-Dihydroequilenin alpha-Dihydroequilenina [Spanish] alpha-Estra-1,3,5,7,9-pentaen-3,17-diol