for the following products
9-Fluoro-11beta,21-dihydroxy-16á,17-(isopropylidenedioxy)pregn-4-ene-3,20-dione | 9-Fluoro-16a,17-(isopropylidenedioxy)corticosterone | Pregn-4-ene-3,20-dione,9-fluoro-11,21-dihydroxy-16,17-[(1-methylethylidene)bis(oxy)]-(11b,16a)- (9CI) and 9alpha-Fluoro-11beta,16alpha,17alpha,21-tetrahydroxy-pregna-4-ene-3,20-dione