(3-beta,17-alpha)-19-Norpregn-4-en-20-yne-3,17-diol 1231-93-2 17-alpha-Ethynyl-19-norandrost-4-ene-3-beta,17-beta-diol 17alpha-Ethynyl-estra-4-ene-3beta,17beta-diol 19-Nor-17-alpha-pregn-4-en-20-yne-3-beta,17-diol 19-Norpregn-4-en-20-yne-3,17-diol, (3-beta,17-alpha)- (9CI) Aethynodiolum EINECS 214-971-5 ETHYNODIOL Ethinodiol Etinodiol [INN-Spanish] Etinodiolo [DCIT] Etynodiol Etynodiolum [INN-Latin]