Fluticasone propionate is a synthetic corticosteroid having the chemical name S-(fluoromethyl)-6α,9-difluoro-11β,-17-dihydroxy-16α-methyl-3-oxoandrosta1,4-diene-17β-carbothioate, 17-propionate, and the following chemical structure:luticasone propionate is a synthetic corticosteroid having the chemical name S-(fluoromethyl)-6α,9-difluoro-11β,-17-dihydroxy-16α-methyl-3-oxoandrosta1,4-diene-17β-carbothioate, 17-propionate, and the following chemical structure: