(17α)-10,17-Dihydroxy-19-norpregn-4-en-20-yn-3-one; 10,17-Dihydroxy-19-nor-17α-pregn-4-en-20-yn-3-one; 10β,17-Dihydroxy-19-nor-17α-pregn-4-en-20-yn-3-one; 10β,17β-Dihydroxy-17α-ethynylestr-4-en-3-one; 10β-Hydroxy-19-norethisterone; 10β-Hydroxynorethindrone; 10β-Hydroxynorethisterone; 17α-Ethinyl-10β,17β-dihydroxyestr-4-en-3-one; 17α-Ethynyl-10β,17β-dihydroxy-4-estren-3-one; NSC 63012