英文名称:Azelastine Ep Impurity E (Z-Isomer); Azelastine Hydrochloride Impurity E As Z-Isomer; Azelastine EP Impurity E; (Z)-3-(4-Chlorobenzylidene)Isobenzofuran-1(3H)-One; Azelastine EP Impurity E (Z-Isomer); 3-(4-Chlorobenzylidene)Isobenzofuran-1(3H)-One; (Z)-3-(4-Chlorobenzylidene)Isobenzo; 1(3H)-Isobenzofuranone, 3-[(4-Chlorophenyl)Methylene]-, (3Z)-; Azelastine Ep Impurity E; Azelastine Hydrochloride Ep Impurity E As Z-Isomer