17-alpha-Ethynyl-estr-5(10)-ene-3-alpha,17-beta-diol 17alpha-Ethynyl-estr-5(10)-ene-3alpha,17beta-diol 17alpha-Ethynylestr-5(10)-ene-3alpha,17beta-diol 19-Nor-17-alpha-pregn-5(10)-en-20-yne-3-alpha,17-diol 19-Nor-17alpha-pregn-5(10)-en-20-yne-3alpha,17-diol (8CI) 19-Nor-17alpha-pregn-5(10)-en-20-yne-3alpha-17beta-diol 19-Norpregn-5(10)-en-20-yne-3,17-diol, (3-alpha,17-alpha)- 19-Norpregn-5(10)-en-20-yne-3,17-diol, (3alpha,17alpha)- 21466-08-0 3-alpha-Hydroxynorethynodrel 3alpha-Hydroxynorethynodrel NSC 77061