the metabolites were analyzed by gas chromatography-mass spectrometry , and the following six metabolites labeled with 2h or 18o ( or both ) were identified : 17 alpha- [ 17-18o ] hydroxypregnenolone , [ 17-18o ] dehydroepiandrosterone , 5- [ 17-18o ] androstene-3 beta , 17 beta-diol , 16 alpha- [ 16-18o ] hydroxy [ 17-2h ] pregnenolone , 5- [ 17 beta-2h , 17-18o ] androstene-3 beta,17 alpha-diol , and 5,16- [ 17-2h ] androstadien-3 beta-ol .
C0376260
hydroxypregnenolone
C0373704
pregnenolone