progesterone , 5 alpha-pregnane-3,20-dione ( 5 alpha-dhp ) , 3 alpha-hydroxy-5 alpha-pregnan-20-one ( 3 alpha-oh ) , 20 alpha-hydroxy-4-pregnen-3-one ( 20 alpha-dhp ) , 20 alpha-hydroxy-5 alpha-pregnan-3-one , and 5 alpha-pregnane-3 alpha , 20 alpha-diol in ovarian venous plasma of androgen-sterilized rats treated with 25 iu of human chorionic gonadotropin ( hcg ) were assayed by gas chromatography .
C0033308
progesterone
C0012311
20 alpha-hydroxy-4-pregnen-3-one