19788-77-3 6A-FLUORO-16A-METHYL-1,4,9 (11)-PREGNATRIENE-17A,21-DIOL-3,20-DIONE-21-ACETATE 6alpha-Fluoro-17,21-dihydroxy-16alpha-methylpregna-1,4,9(11)-triene-3,20-dione 21-acetate EINECS 243-315-0