Synonyms: 5b-Pregnan-20-one, 3a,17-dihydroxy- (8CI); 17a-Hydroxypregnanolone; 3a,17-Dihydroxy-5b-pregnan-20-one; 3a,17a-Dihydroxy-20-oxo-5b-pregnane; 3a,17a-Dihydroxy-5b-pregnan-2-one;3a,17a-Dihydroxy-5b-pregnan-20-one; 5b-Pregnan-3a,17a-diol-20-one; 5b-Pregnane-3a,17a-diol-20-one; NSC 52759