3d image of quingestanol skeletal formula

quingestanol norethisterone 3-cyclopentyl enol ether progestin 19-nortestosterone quingestanol acetate pharmaceutical drug progestin medication birth control pills synthetic w-4540 acetate progestogen progestogen ester agonist progesterone receptor prodrug norethisterone intermediate postcoital hormonal contraceptive rendering contraception control oral contraceptives mother gynecology woman motherhood birth female sex hormone menopausal hormone therapy gynecological conditions infertility hormonal replacement function action endocrine endocrinology level prohormone analogue