the metabolism of epitestosterone by the same system is characterized by a marked stereoselectivity in favor of 16 beta-hydroxylation ( 4- to 5-fold relative to 16 alpha-hydroxylation ) , formation of 15 alpha-hydroxyepitestosterone , and a rate of androstenedione formation which is three to five times higher than that observed with testosterone .
C0014594
epitestosterone
C0039601
testosterone