Synonyms: 16alpha,17,21-Trihydroxy-pregna-1,4,9(11)-triene-3,20-dione, Pregna-1,4,9(11)-triene-3,20-dione, 16,17,21-trihydroxy-, (16α)- (9CI, ACI), (16α)-16,17,21-Trihydroxypregna-1,4,9(11)-triene-3,20-dione (ACI), Pregna-1,4,9(11)-triene-3,20-dione, 16α,17,21-trihydroxy- (7CI), 16α,17,21-Trihydroxypregna-1,4,9(11)-triene-3,