long qt syndrome

PD-118057 is a potent ether associated (hERG) potassium channel activator that shows no activity against hERG. PD-118057 inhibits the excitability of the membrane by activating the hERG channel. PD-118057 is a potential compound for the treatment of delayed repolarization in inherited or acquired long QT syndrome and congestive heart failure.

Ibutilide Fumarate (U70226E) is the fumarate salt form of ibutilide, a class III antiarrhythmic agent. Ibutilide exerts its effect by activating a slow, inward, predominately sodium current rather than by blocking outward potassium currents. This results in prolongation of atrial and ventricular action potential duration and refractory periods. Ibutilide slightly decreases the sinus rate and atrioventricular (AV) conduction and produces a dose-related prolongation of the QT interval.

Eleclazine, also known as GS-6615, is a selective late sodium current inhibitor. Eleclazine is potentially useful for treatment of coronary vasodilators, antiarrhythmics and vasodilators. Eleclazin showed a shortening of the QTc interval (the time interval between the start of the Q-wave and end of the T-wave in the heart’s electrical cycle) in patients with long QT-3 (LQT3) syndrome. LQT3 is a genetic disorder that prolongs the heart’s QTc interval and can cause life-threatening cardiac arrhythmias (abnormal heartbeats).

2-Piperidinecarboxamide, N-[4-(4-methoxyphenyl)-2-thiazolyl]-1-(phenylsulfonyl)- is a potent KCNQ1 channel activator that can be used in long QT syndrome (LQTS) studies.