Budesonide EP Impurity A Catalogue B501461 CAS 13951-70-7 M.W 376.45 M.F C21H28O6 Specifications FAQs Synonyms:(8S,9S,10R,11S,13S,14S,16R,17S)-11,16,17-trihydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one