生物活性

L-765314 is a potent and selective antagonist of α1b adrenergic receptor with Ki of 5.4 nM and 2.0 nM for rat and human α1b adrenergic receptor, respectively. It has mainly been used to investigate the role of α1B receptors in the regulation of blood pressure. 

In vivo, the results of plasma assayed by liquid chromatograph/mass spectrometer (LCMS) show that the mean Cmax of L-765314 (A322312) is 1.05 μM and the t1/2 is 0.5 h. L-765314 shows weak potency for inhibiting the pressor response to either phenylephrine or A-61603 (AD25>3 mg/kg for each). On the basis of the inhibition of pressor responses to the R1a subtype selective agonist A-61603, L-765314 appears to be selective versus the R1a receptor up to a dose of 0.3 mg/kg. The results of hypotensive potency in rats show that both L-765314 and terazosin tend to decrease heart rate (about 25 bpm at 1 mg/kg iv).

化学数据

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）

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。