Synonyms: Pregna-1,4-diene-3,20-dione,9-fluoro-11b,17,21-trihydroxy-16b-methyl-, 21-acetate(6CI,7CI,8CI);21-Acetoxy-9a-fluoro-11b,17a-dihydroxy-16b-methylpregna-1,4-diene-3,20-dione;9-Fluoro-11b,17,21-trihydroxy-16b-methylpregna-1,4-diene-3,20-dione21-acetate;Betamethasone acetate;