Synonyms: Pregn-4-ene-3,20-dione,11a,17,21-trihydroxy- (8CI);11-Epicortisol; 11-Epihydrocortisone; 11-Isocortisol; 11a,17,21-Trihydroxypregn-4-ene-3,20-dione;11a,17,21-Trihydroxypregnen-4-en-3,20-dione;11a,17a,21-Trihydroxy-4-pregnene-3,20-dione; 11a,17a,21-Trihydroxyprogesterone; 11a-Cortisol; 11a-Epicortisol; 11a-Hydroxycortisol; Epi-F;Epicortisol; Epihydrocortisone; NSC 23903; NSC 27390; Pregn-4-ene-11a,17a,21-triol-3,20-dione; U 1676; epi-F