Synonyms: 11-Pregnanone,3a,17,20b,21-tetrahydroxy- (5CI); 5b-Pregnan-11-one, 3a,17,20b,21-tetrahydroxy- (7CI,8CI); 20b-Cortolone; 20b-Hexahydrocortisone; 3a,17,20b,21-Tetrahydroxy-5b-pregnan-11-one; 3a,17a,20b,21-Tetrahydroxy-5b-pregnan-11-one; 5b-Pregnan-3a,17a,20b,21-tetrol-11-one; 5b-Pregnane-3a,17a,20b,21-tetrol-11-one; NSC 56997; b-Cortolone