Known as: norethisterone and ethinylestradiol, Ethinyl Estradiol / Norethindrone, (17 alpha)-17-hydroxy-19-norpregn-4-en-20-yn-3-one, mixture with (17 alpha)-19-norpregna-1,3,5(10)-trien-20-yne-3,17-diol
An oral contraceptive formulation containing the semisynthetic estrogen, ethinyl estradiol, combined with the synthetic progestin, norethindrone…