Budesonide Impurity 02 Catalogue B501482 CAS 88411-77-2 M.W 446.54 M.F C25H34O7 Specifications FAQs (6β,11β,16α)-16,17-[Butylidenebis(oxy)]-6,11,21-trihydroxypregna-1,4-diene-3,20-dione