Synonyms: 5b-Pregnane-11,20-dione, 3a,17,21-trihydroxy- (7CI,8CI);Cortisone, tetrahydro- (6CI); 3a,17,21-Trihydroxy-5b-pregnan-11,20-dione; 3a,17,21-Trihydroxy-5b-pregnane-11,20-dione; 3a,17a,21-Trihydroxy-5b-pregnane-11,20-dione; 3a,5b-Tetrahydrocortisone; 5b-Pregnan-3a,17a,21-triol-11,20-dione; 5b-Pregnane-3a,17a,21-triol-11,20-dione; 5b-Tetrahydrocortisone; Ba 2681; NSC 76984; THE;Tetrahydro E; Tetrahydrocompound E; Tetrahydrocortisone; Urocortisone