| 中文名称 | 乙吗噻嗪 |
| 英文名称 | Moricizine |
| CAS号 | 31883-05-3 |
| 分子式 | C22H25N3O4S |
| 分子量 | 427.52 |
| EINECS号 | 250-854-5 |
| 熔点 | 156-157° |
| 沸点 | 625.0±55.0 °C(Predicted) |
| 密度 | 1.315±0.06 g/cm3(Predicted) |
| 溶解度 | 可溶于氯仿(轻微)、甲醇(非常轻微) |
| 形态 | 固体 |
| 酸度系数(pKa) | 6.4(at 25℃) |
| 颜色 | 浅橙色到浅橙色 |
Moricizine (Moracizine) induces the tonic block of INa with the apparent dissociation constant (Kd,app) of 6.3 microM at -100 mV and 99.3 microM at -140 mV. Moricizine at 30 microM shifts the h infinity curve to the hyperpolarizing direction by 8.6 +/- 2.4 mV. Moricizine also produces the phasic block of INa, which is enhanced with the increase in the duration of train pulses, and is more prominent with a holding potential (HP) of -100 mV than with an HP of -140 mV. Moricizine exerts an antiarrhythmic action on atrial myocytes, as well as on ventricular myocytes, by blocking Na+ channels with a high affinity to the inactivated state and a slow dissociation kinetics.