The monohydroxylation of 17β-estradiol at the 15α-, 16α-, and 16β-positions by bovine adrenal perfusion

Abstract 17β-Estradiol-4- 14 C was perfused through bovine adrenal glands. The bulk (65%) of the estradiol was recovered, but several metabolites, all in low rates of conversion, were isolated. Four of these were identified as esterone, estriol, 16β-epiestriol and 15-αhydroxy-17β- estradiol.