Budesonide EP Impurity H Catalogue B501468 CAS 313474-58-7 M.W 412.53 M.F C25H32O5 Specifications FAQs Synonyms:(6aS,8aS,8bS,11aR,12aS,12bS)-8b-(2-hydroxyacetyl)-6a,8a-dimethyl-10-propyl-1,2,6a,8,8a,8b,11a,12,12a,12b-decahydro-4H-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxol-4-one