Fluticasone Propionate EP Impurity K Catalogue B496461 CAS / M.W 517.02 M.F C25H31ClF2O5S Specifications FAQs Synonyms:(6S,8S,9R,10S,11S,13S,14S,16R,17R)-6-chloro-9-fluoro-17-(((fluoromethyl)thio)carbonyl)-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate