Heterocyclyl-benzoylguanidines of the formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and Het have the meanings given herein, and physiologically unobjectionable salts thereof, display antiarrhythmic properties and act as inhibitors of the cellular Na.sup.+ /H.sup.+ antiporter.
式子I中的杂环基
苯甲酰
胍化合物,其中R1,R2,R3和Het的含义如本文所述,以及其生理上无异议的盐,具有抗心律失常性质,并作为细胞Na+/H+反向转运体的
抑制剂。