52668-06-1 9-Fluoro-11beta,17,21-trihydroxy-16beta-methylpregna-1,4-diene-3,20-dione 21-(3,3-dimethylbutyrate) EINECS 258-086-2 Pregna-1,4-diene-3,20-dione, 21-(3,3-dimethyl-1-oxobutoxy)-9-fluoro-11,17-dihydroxy-16-methyl-, (11beta,16beta)-