17-OH PREG (17a-Hydroxypregnenolone) (E4782-GRP)

17-OH PREG (17a-Hydroxypregnenolone) is a pregnenolone metabolite and DHEA precursor. It is formed through CYP17A1 hydroxylase and 17,20-lyase activities. It is the most relevant steroid for the study of elevated plasma levels linked to type II 3β-hydroxysteroid dehydrogenase deficiency.