... -027-50756108 Betamethasone English Synonyms: (11beta,16beta)-9-Fluoro-11,17,21-trihydroxy-16-methylpregna-1,4-diene- ... dione;16-beta-methyl-1,4-pregnadiene-9-alpha-fluoro-11-beta,17-alpha,21-triol-3,20;16 ... methylpregna-1,4-diene-3,20-dione;9-alpha-fluoro-11-beta,17-alpha,21-trihydroxy-16-beta-methylpregna ... -1,4-diene;9-alpha-fluoro-16-beta-methyl-1,4-pregnadiene-11-beta,17 ...