Chlormadinone acetate is a progestogen with potent progestogenic activity and antiandrogenic effects. Chlormadinone acetate acts on glucocorticoid receptor, progesterone receptor, androgen receptor, and GABAA receptor. Chlormadinone acetate induces endometrial proliferation in estrogen-pretreated rabbits, inhibits testosterone-stimulated growth of the prostate and seminal vesicles in castrated rats, and reduces the thymus and adrenal weights in juvenile rats. Chlormadinone acetate is applicable to research related to diseases such as depression and reproductive metabolic disorders[1][2][3].