Fluticasone Propionate EP Impurity B Catalogue B496452 CAS 948566-12-9 M.W 484.55 M.F C24H30F2O6S Specifications FAQs Synonyms: [[6α,9-difluoro-11β-hydroxy-16α-methyl-3-oxo-17-(propanoyloxy) androsta-1,4-dien-17β-yl]carbonyl]sulphenic acid