HNS-32 is a compound with antiarrhythmic and vasodilatory effects in canine hearts, showing superior protective effects against ischemic and reperfusion arrhythmias compared to an equivalent dose of Mexiletine hydrochloride (HY-A0093). Furthermore, HNS-32 exhibits significant negative chronotropic effects on mammalian ventricular myocardium, indicating its potential application value in the study of acute coronary syndrome[1].