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VU0134992 hydrochloride

CAS No.: 1052515-91-9

VU0134992 hydrochloride is the first subtype-preferring, orally active and selective blocker of Kir4.1 potassium channel
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Description VU0134992 hydrochloride is the first subtype-preferring, orally active and selective blocker of Kir4.1 potassium channel pore(IC50 : 0.97 μM).
In vitro 在全细胞膜片钳电生理实验中,VU0134992以0.97 µM的IC50值抑制Kir4.1,并且相比Kir4.1/5.1联合通道(IC50 = 9 µM)呈现9倍选择性,在-120 mV下。在铊(Tl+)通量实验中,VU0134992对Kir4.1的选择性超过Kir1.1、Kir2.1和Kir2.2 30倍以上;对Kir2.3、Kir6.2/SUR1和Kir7.1有弱抑制作用;而对Kir3.1/3.2、Kir3.1/3.4和Kir4.2的活性相同。这一效力和选择性概况优于Kir4.1抑制剂Amitriptyline、诺替林和Fluoxetine 。化合物化学研究确认了VU0134992中对抑制Kir4.1至关重要的组成部分。膜片钳电生理、分子建模和定点突变实验鉴定了通道封锁的关键残基为内衬谷氨酸158和异亮氨酸159。
In vivo VU0134992在大鼠血浆中显示出较高的未结合游离部分(fu值为0.213)。VU0134992的口服给药导致了剂量依赖性的利尿、排钠及排钾效应。VU0134992是首个具有体内活性的工具化合物,用于探索Kir4.1作为治疗高血压的新型利尿靶标的治疗潜力。
Animal experiments VU0134992 hydrochloride (250-300 g Male Sprague-Dawley rats;50 and 100 mg/kg) Oral gavage
molecular weight 447.84
Molecular formula C20H32BrClN2O2
CAS 1052515-91-9
Storage Powder: -20°C for 3 years | In solvent: -80°C for 1 year
Solubility DMSO: 230 mg/mL (513.58 mM), Sonication is recommended.
References 1. Kharade SV, et al. Discovery, Characterization, and Effects on Renal Fluid and Electrolyte Excretion of the Kir4.1 Potassium Channel Pore Blocker, VU0134992. Mol Pharmacol. 2018 Aug;94(2):926-937.