Synonyms: 5b-Pregnane-11,20-dione, 3a,17-dihydroxy- (8CI); 17a-Hydroxy-11-ketopregnanolone; 3a,17-Dihydroxy-5b-pregnane-11,20-dione; 3a,17a-Dihydroxy-5b-pregnane-11,20-dione; 5b-Pregnan-3a,17a-diol-11,20-dione; 5b-Pregnane-3a,17a-diol-11,20-dione; L 513789-0; NSC 11572; NSC 23156;Pregnane-3a,17a-diol-11,20-dione; THA; U 1843