英文别名Betamethasone 21-Acetate-17-propionate; [(8S,9R,10S,11S,13S,14S,16S,17R)-17-(2-acetyloxyacetyl)-9-fluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl] propanoate; (11β,16β)-21-(Acetyloxy)-9-fluoro-11-hydroxy-16-Methyl-17-(1-oxopropoxy)pregna-1,4-diene-3,20-dione; Betamethasone Dipropionate EP Impurity D; Pregna-1,4-diene-3,20-dione, 21-(acetyloxy)-9-fluoro-11-hydroxy-16-methyl-17-(1-oxopropoxy)-, (11β,16β)- 
