生物活性
Methscopolamine is a muscarinic acetylcholine receptors blocker. It is a muscarinic antagonist structurally similar to the neurotransmitter acetylcholine and acts by blocking the muscarinic acetylcholine receptors and is thus classified as an anticholinergic. It also may work directly on the vomiting center. Methscopolamine bromide must be taken before the onset of motion sickness to be effective. It acts by interfering with the transmission of nerve impulses by acetylcholine in the parasympathetic nervous system (specifically the vomiting center).
化学数据
分子量 | 398.29 |
分子式 | C18H24BrNO4 |
CAS号 | 155-41-9 |
纯度 | >99% |
溶解性(25°C) | DMSO 70 mg/mL Water 60 mg/mL |
储存和运输条件 | 固体粉末: -20°C 冷藏长期储存 常温运输及临时存放 |
不同实验动物依据体表面积的等效剂量转换表(数据来源于FDA指南)
| 小鼠 | 大鼠 | 兔 | 豚鼠 | 仓鼠 | 狗 |
重量 (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
体表面积 (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
Km系数 | 3 | 6 | 12 | 8 | 5 | 20 |
动物 A (mg/kg) = 动物 B (mg/kg) × | 动物 B的Km系数 |
动物 A的Km系数 |
例如,依据体表面积折算法,将化合物用于小鼠的剂量20 mg/kg 换算成大鼠的剂量,需要将20 mg/kg 乘以小鼠的Km系数(3),再除以大鼠的Km系数(6),得到化合物用于大鼠的等效剂量为10 mg/kg。
储备液配制
以下数据基于产品分子量,对于特殊产品,请参照COA中的储备液配制条件和说明进行操作。
Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
---|
1 mM | 2.5107 mL | 12.5537 mL | 25.1073 mL |
5 mM | 0.5021 mL | 2.5107 mL | 5.0215 mL |
10 mM | 0.2511 mL | 1.2554 mL | 2.5107 mL |