英文别名Dexamethasone Impurity 17; Clobetasol Propionate Impurity 2; Clobetasol Impurity 2; Clobetasol Impurity; (11β)-9-Fluoro-11,21-dihydroxy-16-methyl-pregna-1,4,16-triene-3,20-dione; 9-Fluoro-11β,21-dihydroxy-16-methylpregna-1,4,16-triene-3,20-dione; Pregna-1,4,16-triene-3,20-dione, 9-fluoro-11,21-dihydroxy-16-methyl-, (11β)- 
