conversion of [ 3h ] pregnenolone to [ 3h ] progesterone and [ 3h ] 17-hydroxypregnenolone to [ 3h ] 17-hydroxyprogesterone was prevented by the addition of cyanoketone , an inhibitor of 3 beta-hydroxysteroid dehydrogenase .
C0373704
pregnenolone
C0376260
17-hydroxypregnenolone