tachyarrhythmias

Atropine (DL-Hyoscyamine) 是竞争性的毒蕈碱乙酰胆碱受体拮抗剂，有抗近视效果。它是一种从颠茄植物中分离出来的天然生物碱，可阻断乙酰胆碱对心率和收缩力的抑制作用。

Nifekalant hydrochloride 是一种 IKr 钾通道阻滞剂，IC50为10 µM，属于 III 类抗心律不齐化合物，可用于快速室上性心律失常的研究。

Atropine sulfate (Sulfatropinol) 是一种竞争性的毒蕈碱乙酰胆碱受体拮抗剂。

Pilsicainide HCl (SUN 1165) 是一种纯钠通道阻滞剂。

Adaprolol maleate is a beta-blocker and opthalmic which may be used in the treatment of Glaucoma or other ailments of the eye. Adaprolol has marked electrophysiologic effects. Its major action was on sinus node; it prolonged the basic sinus cycle length and had significant effect on intrinsic automaticity as reflected by the prolonged corrected sinus node recovery time and sinuatrial conduction time. There was, also, direct effect on atrial function and AV nodal function. Adaprolol prolonged the effective refractory period of the His-Purkinje system and the ventricle. The potency of adaprolol's electrophysiologic effects are higher compared to other widely used beta-blockers. Adaprolol appears to be a potent beta-blocker with particularly strong antiarrhythmic effect and it would be very useful in the treatment of both supraventricular and ventricular tachyarrhythmias and ectopic beats.

Flecainide acetate (R-818) 是位于心脏的 Nav1.5钠离子通道的阻断剂，具有抗心律失常的作用。

Flecainide-d4 Acetate 是 Flecainide Acetate 的氘代化合物。Flecainide Acetate 的 CAS 号为 54143-56-5。Flecainide acetate 是位于心脏的 Nav1.5钠离子通道的阻断剂，具有抗心律失常的作用。