生物活性

GS-5885 is an inhibitor of the hepatitis C virus (HCV) NS5A protein and exhibits potent suppression of genotype 1 HCV replicons. GS-5885 was well tolerated and resulted in median maximal reductions in HCV RNA ranging from 2.3 log(10) IU/ml (1 mg QD) to 3.3 log(10) IU/ml (10 mg QD in genotype 1b and 30 mg QD). E(max) modeling indicated GS-5885 30 mg was associated with>95% of maximal antiviral response to HCV genotype 1a. HCV RNA reductions were generally more sustained among patients with genotype 1b vs. 1a. Three of 60 patients had a reduced response and harbored NS5A-resistant virus at baseline. NS5A sequencing identified residues 30 and 31 in genotype 1a, and 93 in genotype 1b as the predominant sites of mutation following GS-5885 dosing. Ledipasvir (formerly GS-5885) is currently in Phase III clinical trials.

化学数据

分子量	889.0
分子式	C49H54F2N8O6
CAS号	1256388-51-8
纯度	>98%
溶解性（25°C）	DMSO
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K_m系数（3），再除以大鼠的K_m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

以下数据基于半岛bd体育手机客户端 分子量，对于特殊半岛bd体育手机客户端 ，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	1.1249 mL	5.6243 mL	11.2486 mL
5 mM	0.225 mL	1.1249 mL	2.2497 mL
10 mM	0.1125 mL	0.5624 mL	1.1249 mL