Synonyms: Pregna-1,4-diene-3,20-dione,9-fluoro-11b,17,21-trihydroxy-16b-methyl-, 21-(hydrogen succinate)(8CI); Succinic acid, 21-monoester with 9-fluoro-11b,17,21-trihydroxy-16b-methylpregna-1,4-diene-3,20-dione (8CI);Betafluorene; Betamethasone hemisuccinate