2. Signaling Pathways
  3. Membrane Transporter/Ion Channel
  4. Potassium Channel

Potassium Channel

KcsA

Potassium Channel

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Potassium channels are the most widely distributed type of ion channel and are found in virtually all living organisms. They form potassium-selective pores that span cell membranes. Potassium channels are found in most cell types and control a wide variety of cell functions. Potassium channels function to conduct potassium ions down their electrochemical gradient, doing so both rapidly and selectively. Biologically, these channels act to set or reset the resting potential in many cells. In excitable cells, such asneurons, the delayed counterflow of potassium ions shapes the action potential. By contributing to the regulation of the action potential duration in cardiac muscle, malfunction of potassium channels may cause life-threatening arrhythmias. Potassium channels may also be involved in maintaining vascular tone.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-A0148AR
    Halofantrine hydrochloride (Standard)
    		Inhibitor
    Halofantrine hydrochloride (Standard) is the analytical standard of Halofantrine hydrochloride. This product is intended for research and analytical applications. Halofantrine hydrochloride (SKF-102886 hydrochloride; WR-171669 hydrochloride) is a blocker that delays the delayed rectifier potassium current by inhibiting human ERG channels, and it is a potent antimalarial agent. Halofantrine hydrochloride inhibits the Cap1-dependent oxidative stress response of Candida albicans, suppresses ROS responses, and enhances the antifungal (Fungal) activity of oxidative damage agents. Halofantrine hydrochloride exhibits antifungal activity in the Galleria mellonella model, and shows antimalarial activity against Plasmodium strains both in vitro and in animal models. Halofantrine hydrochloride can be used in studies related to invasive candidiasis, falciparum malaria, and vivax malaria.
    Halofantrine hydrochloride (Standard)
  • HY-133614
    Dihydroisopimaric acid
    		Activator
    Dihydroisopimaric acid activates large conductance Ca2+ activated K+ (BK) channels alphabeta1 in the direct measurement of BKalphabeta1 opening under whole-cell voltage clamp.
    Dihydroisopimaric acid
  • HY-W783680
    Potassium ionophore III
    		Activator
    Potassium ionophore III (BME-44) is a specific potassium ion carrier with high selectivity for sodium and ammonium ions and high lipophilicity.
    Potassium ionophore III
  • HY-B0122S1
    Topiramate-13C
    		Activator
    Topiramate-13C (McN 4853-13C) is 13C labeled Topiramate. Topiramate (McN 4853) is a broad-spectrum antiepileptic agent. Topiramate is a GluR5 receptor antagonist. Topiramate produces its antiepileptic effects through enhancement of GABAergic activity, inhibition of kainate/AMPA receptors, inhibition of voltage-sensitive sodium and calcium channels, increases in potassium conductance, and inhibition of carbonic anhydrase.
    Topiramate-<sup>13</sup>C<sub>
  • HY-100230AR
    ML133 hydrochloride (Standard)
    		Inhibitor
    ML133 (hydrochloride) (Standard) is the analytical standard of ML133 (hydrochloride) (HY-100230A). This product is intended for research and analytical applications. ML133 hydrochloride is a selective Kir2 family channels inhibitor, with an IC50 of 1.8 μM at pH 7.4 and 290 nM at pH 8.5.
    ML133 hydrochloride (Standard)
  • HY-B0920R
    Tolazamide (Standard)
    Tolazamide (U-17835) (Standard) is the analytical standard of Tolazamide. This product is intended for research and analytical applications. Tolazamide is an orally active sulfonylurea agent that inhibits sulfonylurea receptor 1 (SUR1) linked to the inwardly rectifying potassium channel (IC50 = 4.2 µM in HEK293 cells transfected with the human receptor). Tolazamide has anti-diabetic properties. Tolazamide can lower blood glucose in sulfonylurea class. Tolazamide decreases insulin dose while continuing to maintain adequate metabolic control. Tolazamide is able to improve or normalize hyperglycemia and HbA.
    Tolazamide (Standard)
  • HY-106577S
    Cibenzoline-d4
    Cibenzoline-d4 (Cifenline-d4) is deuterium labeled Cibenzoline. Cibenzoline is a class Ia antiarrhythmic active molecule with low anticholinergic activity. Cibenzoline is a KATP channel inhibitor, acting through the pore forming subunit Kir6.2, with an IC50 of 22.2 μM. Cibenzoline inhibits IKr and IKs currents with IC50 values of 8.8 μM and 12.3 μM, respectively. Cibenzoline is used in the study of cardiac diseases. In addition, Cibenzoline can induce hypoglycemia.
    Cibenzoline-d<sub>4</sub>
  • HY-174417
    NNRT-IN-10
    		Inhibitor
    NNRT-IN-10 is a potent, selective and orally active non-nucleoside HIV-1 reverse transcriptase (NNRTI) inhibitor with with an EC50 values ranging from 1.16 to 18.3 nM for HIV and its mutant strains. NNRT-IN-10 exhibits good pharmacokinetic properties and favorable safety profiles. NNRT-IN-10 can be used for the study of AIDS, caused by HIV-1.
    NNRT-IN-10
  • HY-P3071
    ShK toxin
    		Inhibitor
    ShK toxin blocks voltage-dependent potassium channel (Kv1.3 channel). ShK toxin can be isolated from the whole body extract of the Caribbean sea anemone (Stichodactylu helianthus). ShK toxin competes with dendrotoxin I and α-dendrotoxin for binding to synaptosomal membranes of rat brain, facilitates acetylcholine release. ShK toxin suppresses K+ currents in cultured rat dorsal root ganglion neurons. ShK toxin also inhibits T lymphocyte proliferation.
    ShK toxin
  • HY-100230
    ML-133
    		Inhibitor
    ML133 is a selective Kir2 family channels inhibitor, with an IC50 of 1.8 μM at pH 7.4 and 290 nM at pH 8.5.
    ML-133
  • HY-129445
    SG-209
    		Activator
    SG-209 is a Nicorandil (HY-B0341) derivative that produces relaxation through potassium channel activation, while this action contributes to the vasodilating action of Nicorandil (HY-B0341) at higher concentrations. SG-209 dilates tracheal smooth muscle and increases tracheal blood flow in anesthetized dogs.
    SG-209
  • HY-B1467R
    Domiphen bromide (Standard)
    		Inhibitor
    Domiphen bromide (Standard) is the analytical standard of Domiphen bromide (HY-B1467). This product is intended for research and analytical applications. Domiphen bromide is a cationic active quaternary ammonium salt and also an inhibitor of HERG channels (IC50: 9 nM), aminopeptidase-like enzymes, Escherichia coli alkaline phosphatase, and α-chymotrypsin. Domiphen bromide has multiple activities such as antibacterial, antimalarial, and disinfectant properties, and it is also a synergist of Colistin (HY-113678). Domiphen bromide can be used as a chemical preservative and a cationic surfactant, and it can also be used in the research of bacterial infectious diseases such as pharyngitis, thrush, and oral ulcers.
    Domiphen bromide (Standard)
  • HY-17398R
    Mitiglinide calcium (Standard)
    		Antagonist
    Mitiglinide (calcium) (Standard) is the analytical standard of Mitiglinide (calcium). This product is intended for research and analytical applications. Mitiglinide Calcium (KAD-1229 anhydrous), an insulinotropic agent, is an ATP-sensitive K+ (KATP) channel antagonist. Mitiglinide Calcium is highly specific to the Kir6.2/SUR1 complex (the pancreatic beta-cell KATP channel). Mitiglinide Calcium can be used for the research of type 2 diabetes.
    Mitiglinide calcium (Standard)
  • HY-D0143A
    Quinine dihydrochloride
    		Inhibitor
    Quinine dihydrochloride is an orally active alkaloid extracted from cinchona bark and can be used in anti-malarial studies. Quinine dihydrochloride is a potassium channel inhibitor that inhibits WT mouse Slo3 (KCa5.1) channel currents evoked by voltage pulses to +100 mV with an IC50 of 169 μM.
    Quinine dihydrochloride
  • HY-121977
    IKs124
    		Inhibitor
    IKs124 is KCNE2/KCNQ1 potassium channel blocker with the with an IC50 of 8 nM. IKs124 can be used for study of peptic ulcers.
    IKs124
  • HY-101843R
    ML213 (Standard)
    		Activator
    ML213 (Standard) is the analytical standard of ML213 (HY-101843). This product is intended for research and analytical applications. ML213 is a selective activator of Kv7.2 and Kv7.4 channels, enhances Kv7.2 and Kv7.4 channels with EC50s of 230 and 510 nM, respectively.
    ML213 (Standard)
  • HY-15565R
    APD668 (Standard)
    		Inhibitor
    APD668 (Standard) is the analytical standard of APD668. This product is intended for research and analytical applications. APD668 is a potent, selective and orally active agonist of G-protein coupled receptor GPR119, with EC50s of 2.7 nM and 33 nM for hGPR119 and rGPR119, respectively. APD668 shows no significant inhibition of any of the five major CYP isoforms with the exception of CYP2C9 (Ki=0.1 μM). APD668 can be used for the research of steatohepatitis and diabetes.
    APD668 (Standard)
  • HY-A0236AR
    Aprindine hydrochloride (Standard)
    		Inhibitor
    Aprindine hydrochloride (Standard) is the analytical reference standard of Aprindine hydrochloride (HY-A0236A). This product is used for research and analytical applications. Aprindine hydrochloride is an Ib-class anti-arrhythmic agent. Aprindine hydrochloride mainly exerts its effect by blocking sodium channels (INa), thereby reducing the excitability and conduction velocity of cardiac muscle cells. Aprindine hydrochloride significantly inhibits delayed potassium currents, which helps to prolong the atrial effective refractory period (AERP) and inhibit the occurrence of atrial fibrillation. Aprindine hydrochloride can also regulate intracellular calcium ion concentration by inhibiting Na+/Ca2+ exchange current (INCX), thereby further stabilizing cardiac electrical activity. Aprindine hydrochloride can be used for the study of atrial fibrillation (AF) and ventricular arrhythmias.
    Aprindine hydrochloride (Standard)
  • HY-17504BR
    Rosuvastatin Sodium (Standard)
    		Inhibitor
    Rosuvastatin (Sodium) (Standard) is the analytical standard of Rosuvastatin (Sodium). This product is intended for research and analytical applications. Rosuvastatin Sodium is a competitive HMG-CoA reductase (HMGCR) inhibitor, with an IC50 of 11 nM. Rosuvastatin Sodium potently blocks hERG current with an IC50 of 195 nM. Rosuvastatin Sodium reduces the expression of the mature hERG and the interaction of heat shock protein 70 (Hsp70) with the hERG protein. Rosuvastatin Sodium effectively lowers low-density lipoprotein (LDL) cholesterol, triglycerides, and C-reactive protein levels.
    Rosuvastatin Sodium (Standard)
  • HY-107036
    BMS-394136
    		Inhibitor
    BMS-394136 (compound 1) is a potent inhibitor of Kv 1.5, with an IC50 of 0.05 μM. BMS-394136 is a selective IKur inhibitor. BMS-394136 dose-dependently prolongs atrial effective refractory period (AERP) and action potential duration (APD) without effecting ventricular effective refractory period (VERP). BMS-394136 can be used for acute atrial ischemia research.
    BMS-394136
Cat. No. Product Name / Synonyms Application Reactivity