17-hydroxy-19-nor-17α-pregna-4,6-dien-20-yn-3-one; 6,7-Dehydronorethindrone; 6,7-Dehydro Norethindrone; Norethindrone 6,7-Dehydro Impurity
17-hydroxy-19-nor-17α-pregna-4,6-dien-20-yn-3-one; 6,7-Dehydronorethindrone; 6,7-Dehydro Norethindrone; Norethindrone 6,7-Dehydro Impurity