at a relatively high concentration ( 1.0 microgram/ml ) , a number of different steroids , including pregnenolone , 17 alpha-hydroxypregnenolone , corticosterone , cortisol , 11-deoxycorticosterone , 11-deoxycortisol , androstenedione , testosterone , progesterone , 17 alpha-hydroxyprogesterone , 20 beta-dihydroprogesterone , and 17 alpha-hydroxy-20 beta-dihydroprogesterone , were able to induce germinal vesicle breakdown ( gvbd ) in prematuration oocytes .
C0373704
pregnenolone
C0376260
17 alpha-hydroxypregnenolone