Description
16,17-Butylidenebis(oxy)-11-,21-dihydroxypregna-1,4-diene-3,20-dione; (R,S)-11b,16a,17,21,tetrahydroxypregna-1,4-diene-3,20-dione cyclic 16,17-acetal with butyraldehyde; S-1320; Budeson; Preferid; Pulmicort; Rhinocort; Spirocort; budenoside.