2-Oxo-2-((8R,10R,13S,14S,16S,17R)-10,13,16-Trimethyl-3-oxo-17-(propionyloxy)-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)ethyl Propionate; 9-Deschloro-11-deshydroxy Beclomethasone 17,21-Dipropionate;16β-Methyl-3,20-dioxopregna-1,4-diene-17,21-diyl dipropanoate; Beclometasone Dipropionate Impurity Q;