the mode of antiarrhythmic actions of the newly developed antiarrhythmic drugs , tocainide , mexiletine and sun1165 , which bear the n-2,6-dimethylbenzene ring as a common structural unit , were examined by comparing the use-dependent blocking actions on the maximum rate of rise of action potentials ( vmax ) in guinea pig ventricular muscle .
C0003195
antiarrhythmic drugs
C0025887
mexiletine