英文别名Beclomethasone 9,11-Epoxide 17-Propionate; (9β,11β,16β)-9,11-Epoxy-21-hydroxy-16-Methyl-17-(1-oxopropoxy)pregna-1,4-diene-3,20-dione; Beclometasone Dipropionate EP Impurity U; Beclomethasone EP Impurity U; Beclomethasone Propionate Impurity U(EP); Beclomethasone Dipropionate Impurity 3; 9,11β-Epoxy-21-hydroxy-16β-methyl-3,20-dioxo-9β-pregna-1,4-dien-17-yl propanoate 
