[Dialkylaminoalkylbenzimidazoles of pharmacological importance. IV]

In order to improve the analgesic and antiarrhythmic activities of 1-dialkylaminoalkyl-2-benzotriazolylmethylbenzimidazoles previously described, forty derivatives with a chlorine, trifluoromethyl, acetyl or nitrogroup in 5 position were prepared.