(11-beta,16-alpha)-16,17-(Butylidenebis(oxy))-11,21-dihydroxypregna-1,4-diene-3,20-dione (RS)-11beta,16alpha,17,21-Tetrahydroxypregna-1,4-diene-3,20-dione cyclic 16,17-acetal with butyraldehyde 16-alpha,17-alpha-Butylidenedioxy-11-beta,21-dihydroxy-1,4-pregnadiene-3,20-dione 51333-22-3 Bidien Budeson Budesonide Budesonide (11beta,16alpha) Budesonide [USAN:BAN:INN:JAN] Budesonido [INN-Spanish] Budesonidum [INN-Latin] CCRIS 5230 Cortivent EINECS 257-139-7 Entocort Entocort EC Micronyl Preferid Pregna-1,4-diene-3,20-dione, 16,17-(butylidenebis(oxy))-11,21-dihydroxy-, (11-beta,16-alpha)- Pregna-1,4-diene-3,20-dione, 16,17-butylidenebis(oxy)-11,21-dihydroxy-, (11beta,16alpha(R))-, and 16alpha,17-((S)-Butylidenebis(oxy))-11beta,21-dihydroxypregna-1,4-diene-3,20-dione Pregna-1,4-diene-3,20-dione,16,17-(butylidenebis(oxy))-11,21-dihydroxy-, (11beta,16alpha)- Pulmicort Respules Rhinocort Rhinocort alpha S 1320 Spirocort