Budesonide EP Impurity I Catalogue B501469 CAS 113930-13-5 M.W 446.54 M.F C25H34O7 Specifications FAQs Synonyms:(8S,9S,10R,11S,13S,14S,16R,17S)-11,17-Dihydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-16-yl butyrate