kir2.1

ML133 hydrochloride (ML133 HCl) is a selective potassium channel inhibitor for Kir2.1 with IC50 of 1.8 μM (pH 7.4) and 290 nM (pH 8.5), has no effect on Kir1.1 and weak activity for Kir4.1 and Kir7.1.

VU591 hydrochloride is a selective renal outer medullary potassium channel (Kir1.1, ROMK) antagonist (IC50:0.24 μM). Thought to block the intracellular pore of the Kir1.1 channel. Exhibits no effect on Kir7.1 at concentrations up to 10 μM; does not inhibi

IK1 inhibitor PA-6 (PA-6) is a selective and potent inhibitor of IK1 (KIR2.x ion-channel-carried inward rectifier current) with an IC50 of 12-15 nM for human and mouse KIR2.x currents.

VU041 is an inhibitor of Anopheles gambiae and Aedes aegypti inward rectifier potassium 1 channels (IC50: 2.5 μM and 1.7 μM, respectively). VU041 inhibits appreciably is mammalian Kir2.1 (IC50: 12.7 μM) and has less inhibitory effect on mammalian Kir1.1, Kir4.1, Kir6.2 SUR1, and Kir7.1.

ML 297 is a selective Kir3.1 3.2 (GIRK1 2) channel activator (IC50 values are 160, 887 and 914 nM for GIRK1 2, GIRK1 4 and GIRK1 3 respectively). ML 297 exhibits no effect on GIRK2, GIRK2 3, Kir2.1 and Kv7.4 channels, and has minimal effect on a panel of other ion channels, receptors and transporters.

Zacopride is a highly potent 5-HT3 receptor antagonist (Kd = 0.38 nM) and 5-HT4 receptor agonist (Ki = 373 nM). It also is a selective IK1 channel agonist.

Lei-Dab7 TFA, a selective and high-affinity blocker of the K Ca 2.2 (SK2) channel with a dissociation constant (K d) of 3.8 nM, demonstrates over 200-fold selectivity for K Ca 2.2 compared to K Ca 2.1, K Ca 2.3, K Ca 3.1, K v, and Kir2.1. Furthermore, Lei-Dab7 TFA enhances theta-burst responses and long-term potentiation (LTP) in rat hippocampal slices in vitro.

High affinity, selective KCa2.2 (SK2) channel blocker (Kd = 3.8 nM). Exhibits >200-fold selectivity for KCa2.2 over KCa2.1, KCa2.3, KCa3.1, IK, Kv and Kir2.1. Increases theta-burst responses and increases LTP in rat hippocampal slices in vitro. Convulsive