Exterminates medicaments of pylorus screw bacterium : clinical and commonly used medicaments has zun of saltpetre of penicillin of hydroxide ammonia benzyl , tetracycline , armour , gentamicin to wait .
杀灭幽门螺杆菌药物：临床常用药物有羟氨苄青霉素、四环素、甲硝唑、庆大霉素等。
That dimethyl benzyl ammonium is the odd chemical out . Why ?
