N-(aminoalkyl)-substituted(N or C alkyl)-aryl-4-(methylsylfonylamino)benzamides of the formula ##STR1## wherein R is C.sub.1 -C.sub.4 straight chain alkyl, one of R.sub.1, R.sub.2 and R.sub.3 is a phenyl or naphthyl group and the others are hydrogen, --NR.sub.4 R.sub.5 is a secondary or teritary amino group, X and X.sub.1 are hydrogen or alkyl and n is 0 or 1, are useful as antiarrhythmic agents in the treatment of cardiac arrhythmias especially as combination Class I/Class III agents.
该公式化合物为N-(
氨基烷基)-取代(N或C烷基)-芳基-4-(甲基磺酰
氨基)苯甲酰胺,其中R为C1-C4直链烷基,R1、R2和R3中的一个为苯基或
萘基,另外两个为氢,--NR4R5为二级或三级
氨基基团,X和X1为氢或烷基,n为0或1,可用作
抗心律失常药物,特别是作为I类/III类联合药物治疗心律失常。