3d image of trendione skeletal formula

trendione androgen prohormone metabolite anabolic steroid progestogen trenbolone androstenedione progesterone receptor designer nutritional supplement hormone hormonal therapy replacement function action endocrine endocrinology level analogue metabolism biosynthesis cycle mechanism pathway path catabolism biosynthetic biogenesis substrate precursor synthesis derivative bioprecursor metabolic enzyme endogenous molecule molecular formula skeletal structural structure geometry ball stick 3d