Pyridinium derivatives having the formula: ##STR1## in which X is O or S; R is benzoyl optionally substituted with at least halogen or lower alkyl, lower alkoxy, hydroxy or nitro; R.sub.1 is hydrogen, halogen, hydroxy or lower alkyl, R.sub.2 is hydrogen or halogen and n is from 1 to 2, and in which R.sub.1 may be different in each CHR.sub.1 when n is 2. Said derivatives are therapeutically useful for their anti-arrhythmic activity.
具有以下公式的
吡啶盐衍
生物:##STR1##
其中X为O或S;R为苯甲酰,可选地取代至少卤素或较低的烷基,较低的烷氧基,羟基或硝基;R.sub.1为氢,卤素,羟基或较低的烷基,R.sub.2为氢或卤素,n为1到2,并且当n为2时,R.sub.1在每个CHR.sub.1中可能不同。这些衍
生物具有治疗上有用的抗心律失常活性。