Synonyms: Pregna-1,4-diene-3,20-dione,9-fluoro-11b,17,21-trihydroxy-16a-methyl-, cyclic 17,21-(methylorthovalerate) (7CI,8CI);Spiro[17H-cyclopenta[a]phenanthrene-17,4'-[1,3]dioxane],pregna-1,4-diene-3,20-dione deriv.; Dexamethasone 17,21-methylorthovalerate