英文别名Ondansetron Impurity 7; Ondansetron EP Impurity G; Ondansetron HCl Impurity-G; 1,2,3,9-Tetrahydro-3-(1H-imidazol-1-ylmethyl)-9-methyl-4H-carbazol-4-one; 3-(imidazol-1-ylmethyl)-9-methyl-2,3-dihydro-1H-carbazol-4-one; Ondansetron Hydrochloride Dihydrate EP Impurity G; c-Desmethylondansetron