英文别名Beclometasone Dipropionate EP Impurity O; Beclomethasone dipropionate impurity O; (9R,10S,11S,13S,16R,17R)-9,11-dichloro-10,13,16-trimethyl-3-oxo-17-(2-(propionyloxy)acetyl)-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate; 9,11beta-Dichloro-16beta-methyl-3,20-dioxopregna-1,4-diene-17,21-diyl dipropanoate; [2-[(8S,9R,10S,11S,13S,14S,16S,17R)-9,11-dichloro-10,13,16-trimethyl-3-oxo-17-propanoyloxy-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] propanoate; Pregna-1,4-diene-3,20-dione, 9,11beta-dichloro-17,21-dihydroxy-16beta-methyl-, dipropionate; 9,11beta-Dichloro-17,21-dihydroxy-16beta-methyl-pregna-1,4-diene-3,20-dione Dipropionate; Pregna-1,4-diene-3,20-dione, 9,11-dichloro-16-methyl-17,21-bis(1-oxopropoxy)-, (11beta,16beta)- 
