like progesterone , 17 alpha-hydroxyprogesterone , 20 alpha-dihydroprogesterone , medroxyprogesterone acetate , ethinodiol diacetate , org 2058 were inhibitory whereas pregnenolone and 5 alpha-pregnan-3,20-dione were not .
C0033308
progesterone
C0012311
20 alpha-dihydroprogesterone