Synonyms: Pregn-4-ene-3,20-dione,6a-fluoro-11b,16a,17,21-tetrahydroxy-, cyclic 16,17-acetal withacetone, 21-acetate (8CI); 2H-Naphth[2',1':4,5]indeno[1,2-d][1,3]dioxole,pregn-4-ene-3,20-dione deriv.; 6a-Fluoro-16a-hydroxyhydrocortisone16,17-acetonide 21-acetate; Flurandrenolone acetate