(11β,16β)-9-chloro-11-hydroxy-16-methyl-17,21-bis(1-oxopropoxy)pregna-4,6-diene-3,20-dione; 1,2-Dihydro-6,7-dehydrobeclometasone Dipropopionate;9-chloro-11β-hydroxy-16β-methyl-3,20-dioxopregna-4,6-diene-17,21-diyl Dipropanoate; Beclometasone Dipropionate Impurity M;Δ6-1,2-Dihydro Beclomethasone Dipropionate;