The 17α-epimer is present in infant urine as the disulfate.doi:10.1016/S0039-128X(68)80142-4C.H.L. ShackletonJ.R.B. LivingstoneF L MitchellElsevier Inc.SteroidsShackleton CH, Livingstone JR & Mitchell FL 1968 The conjugated 17-hydroxy epimers of delta5-androstene-3beta-17-diol ...