Synonyms: 5b-Pregnan-20-one, 3a,11b,17,21-tetrahydroxy- (8CI); 3a,11b,17,21-Tetrahydroxy-5b-pregnan-20-one; 3a,11b,17,21-Tetrol-5b-pregnan-20-one; 3a,11b,17a,21-Tetrahydroxy-5b-pregnan-20-one; 5b-Pregnane-3a,11b,17a,21-tetrol-20-one; 5b-Tetrahydrocortisol; Ba 2682;Cortisol, tetrahydro-; NSC 57431; Tetrahydro F; Tetrahydrocompound F;Tetrahydrocortisol; Tetrahydrohydrocortisone; Urocortisol