英文别名(16α)-17,21-二羟基-16-甲基孕甾-1,4,7,9(11)-四烯-3,20-二酮; Dexamethasone 7,9-diene; Dexamethasone EP impurity K; 7,9(11)-Dexamethasone; Dexamethasone impurity K; 17,21-Dihydroxy-16alpha-methylpregna-1,4,7,9(11)-tetraene-3,20-dione; Pregna-1,4,7,9(11)-tetraene-3,20-dione, 17,21-dihydroxy-16-methyl-, (16α)-; 17,21-Dihydroxy-16a-methylpregna-1,4,7,9(11)-tetraene-3,20-dione; Dexamethason Impurity K 
