9beta,11beta-epoxy-21-hydroxy-16alpha-methylpregna-1,4-diene-3,20-dione 21-acetate 21-(Acetyloxy)-9β,11β-epoxy-16α-methylpregna-1,4-diene-3,20-dione Einecs 257-657-3 11,21-Didehydro-(9β,11β)-epoxy-21-(acetyloxy) Desoxymetasone Desoximetasone Impurity H Pregna-1,4-diene-3,20-dione, 21-(acetyloxy)-9,11-epoxy-16-methyl-, (9β,11β,16α)- 2-oxo-2-((4aS,4bS,5aS,6aS,7S,8R,9aS,9bS)-4a,6a,8-trimethyl-2-oxo-2,4a,5a,6,6a,7,8,9,9a,9b,10,11-dodecahydrocyclopenta[1,2]phenanthro[4,4a-b]oxiren-7-yl)ethyl acetate