生物活性
Delafloxacin is a fluoroquinolone antibiotic active against both Gram-negative and Gram-positive bacteria such as MRSA. Delafloxacin targets both DNA gyrase and topoisomerase IV, inhibiting DNA synthesis. Unlike most fluoroquinolones, delafloxacin is weakly acidic, which increases its potency in an acidic environments such as those existing in inflammatory cells and in skin and soft tissue infections. Delafloxacin shows good activity against most fluoroquinolone-resistant strains.
化学数据
分子量 | 440.76 |
分子式 | C18H12ClF3N4O4 |
CAS号 | 189279-58-1 |
纯度 | >98% |
溶解性(25°C) | DMSO: 20 mg/mL clear |
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 | 2.2688 mL | 11.344 mL | 22.6881 mL |
5 mM | 0.4538 mL | 2.2688 mL | 4.5376 mL |
10 mM | 0.2269 mL | 1.1344 mL | 2.2688 mL |