3d image of androstenedione skeletal formula

androstenedione 4-androstenedione 17-oxotestosterone 17-ketotestosterone androgen steroid hormone estrone testosterone dehydroepiandrosterone dhea prohormone adrenarche biosynthesis sex hormones supplement hormonal function action endocrine level analogue steroid steroidal endogenous molecule molecular formula skeletal structural structure metabolite metabolism cycle mechanism pathway biosynthetic intermediate biogenesis substrate precursor synthesis derivative metabolic bioactive 3d