.alpha.-Estradiol 1,3,5-Estratriene-3,17.alpha.-diol 17.alpha.-Estradiol 17.alpha.-Oestradiol 3,17-Dihydroxyestratriene 3,17.alpha.-Dihydroxyestra-1,3,5(10)-triene 3,17.alpha.-Dihydroxyoestra-1,3,5(10)-triene 57-91-0 Epiestradiol Estra-1,3,5(10)-triene-3,17-diol, (17.alpha.)- Estra-1,3,5(10)-triene-3,17.alpha.-diol Estradiol, 17.alpha.- NSC20293 Oestra-1,3,5(10)-triene-3,17.alpha.-diol Oestradiol-17.alpha. WLN: L E5 B666TTT&J E1 FQ OQ 17-ALPHA