Synonyms: 5b-Pregnan-20-one, 3a,6a-dihydroxy- (8CI); 3a,6a-Dihydroxy-20-oxo-5b-pregnane; 3a,6a-Dihydroxy-5b-pregnan-20-one; 3a,6a-Dihydroxy-5b-pregnane-20-one; 5b-Pregna-3a,6a-diol-20-one; 5b-Pregnan-3a,6a-diol-20-one; 5b-Pregnane-3a,6a-diol-20-one; 6a-Hydroxypregnanolone; Diolone; NSC 50920