英文别名[2-[(8S,9R,10S,11S,13S,14S,16S,17R)-11-acetyloxy-9-fluoro-17-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate; Pregna-1,4-diene-3,20-dione,11,21-bis(acetoxy)-9-fluoro-17-hydroxy-16-methyl-,(11beta,16beta); Betamethasone Acetate EP Impurity C; Betamethasone 11β,21-Diacetate; Betamethasone-11,21-acetate; Betamethasone Acetate Impurity C; Betamethasone Impurity 20 
