6β-Acetyl Norethindrone Acetate; 6β-Acetoxy-17β-hydroxy-19-norpregn-4-en-20-yn-3-one 17-acetate; Norethisterone Acetate EP Impurity D
6β-Acetyl Norethindrone Acetate; 6β-Acetoxy-17β-hydroxy-19-norpregn-4-en-20-yn-3-one 17-acetate; Norethisterone Acetate EP Impurity D