Budesonide Impurity 05 Catalogue B501485 CAS 3044-42-6 M.W 384.47 M.F C23H28O5 Specifications FAQs Synonyms:2-((8S,9S,10R,11S,13S,14S)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15-decahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl acetate