incorporation of radioactive acetate into pregnenolone , 17-hydroxypregnenolone , progesterone , 17-hydroxyprogesterone. , 20 alpha-dihydroxyprogesterone , dehydroepiandrosterone , androstenedione , testosterone , estrone and estradiol-17beta were analysed by the reverse dilution technique and identified in radiochemically pure form by recrystallization to constant specific activities .
C0033308
progesterone
C0002328
dihydroxyprogesterone