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-B0380S1
    Trimebutine-d5 fumarate
    		Inhibitor
    Trimebutine-d5 fumarate is deuterium labeled Trimebutine fumarate. Trimebutine fumarate is a multi-target inhibitor and opioid receptor agonist with antimuscarinic activity. Trimebutine fumarate inhibits L-type Ca2+ channels and large-conductance calcium-activated potassium channels (BKCa channels), thereby inhibiting extracellular calcium influx and potassium ion efflux. Trimebutine fumarate also targets Toll-like receptors, inhibits Toll-like receptor 2/4/7/8/9 signals, and inhibits LPS-induced IRAK1 activation, as well as ERK1/2, JNK and NF-κB activation, thereby exerting anti-inflammatory effects. Trimebutine fumarate also induces tumor cell apoptosis by inhibiting the AKT/ERK pathway. Trimebutine fumarate also inhibits excessive contraction of smooth muscle and can be used in the study of gastrointestinal disorders such as irritable bowel syndrome (IBS).
    Trimebutine-d<sub>5</sub> fumarate
  • HY-P1274
    ShK-Dap22
    		Inhibitor
    ShK-Dap22 is a potent Kv1.3-specific immunosuppressive Polypeptide. ShK-Dap22 is a selective Kv1.3 channel blocker with IC50s of 23 pM, 1.8 nM, 10.5 nM, 37 nM, and 39 nM for mKv1.3, mKv1.1, hKv1.6, mKv1.4, and rKv1.2 channels, respectively.
    ShK-Dap22
  • HY-120375
    LUF7346
    		Inhibitor
    LUF7346 is a potent Kv11.1 (hERG) channel negative allosteric modulator, with an IC50 of 35.6 ± 3.2 nM.
    LUF7346
  • HY-B1482
    Mesoridazine benzenesulfonate
    		Antagonist
    Mesoridazine (TPS-23) benzenesulfonate, a metabolite of Thioridazine (HY-B0965A), acts as an orally active phenothiazine antipsychotic agent. Mesoridazine benzenesulfonate is a potent and rapid open-channel blocker of human ether-a-go-go related gene (hERG) channels and blocks hERG currents with an IC50 of 550 nM (at 0 mV) in human embryonic kidney 293 cells.Mesoridazine benzenesulfonate can be used for the research of schizophrenia, as well as certain other psychiatric disorders.
    Mesoridazine benzenesulfonate
  • HY-P3898
    Tyr-Somatostatin-28
    Tyr-Somatostatin-28 is a somatostatin that adds a Tyrosine amino acid to Somatostatin-28.
    Tyr-Somatostatin-28
  • HY-167082
    AY 31906
    		Modulator
    AY 31906 is an orally active pyrimidine sulfonamide diuretic. AY 31906 exhibits potent diuretic and natriuretic activities in rats and dogs, along with relatively potassium-sparing properties. AY 31906 exhibits superior activity to Furosemide (HY-B0135). AY-31906 also has antihypertensive effects and can be used in the research of cardiovascular diseases.
    AY 31906
  • HY-B0480R
    Brompheniramine maleate (Standard)
    		Inhibitor
    Brompheniramine (maleate) (Standard) is the analytical standard of Brompheniramine (maleate). This product is intended for research and analytical applications. Brompheniramine ((±)-Brompheniramine) maleate is a potent and orally active antihistamine of the alkylamine class. Brompheniramine maleate is a selective histamine H1 receptor antagonist with a Kd of 6.06 nM. Brompheniramine maleate can block the hERG channels, calcium channels, and sodium channels with IC50s of 0.90 μM, 16.12 μM and 21.26 μM, respectively. Brompheniramine maleate has anticholinergic, antidepressant and anesthetic properties and can be used for allergic rhinitis research.
    Brompheniramine maleate (Standard)
  • HY-162555
    BMS-986308
    		Inhibitor
    BMS-986308 is a selective and orally active renal outer medullary potassium (ROMK) channel inhibitor. BMS-986308 is selective for ROMK over hERG. BMS-986308 can be used for heart failure research.
    BMS-986308
  • HY-129088
    HUP30
    		Activator 99.68%
    HUP30 is a vasodilating agent. HUP30 stimulates soluble guanylyl cyclase, activate K+ channels, and blocks extracellular Ca2+ influx.
    HUP30
  • HY-163735
    BA6b9
    		Inhibitor
    BA6b9 is an allosteric inhibitor of SK4 channels that targets the CaM–PIP2-binding domain with a IC50 value of 8.6 µM (WT SK4). BA6b9 inhibits SK4 channels by interacting with two specific residues, Arg191 and His192 in the S4–S5 linker. BA6b9 significantly prolongs atrial and atrioventricular effective refractory period (ERP) and reduces atrial fibrillation (AF) induction in rat isolated hearts, which has the potential to be used for the research of arrhythmia .
    BA6b9
  • HY-114540
    CP-339818
    		Inhibitor
    CP-339818 is a non-peptide Kv1.3 channel (IC50 = 200 nM) and Kv1.4 channel blocker. CP 339818 inhibits HCN channel with IC50s of 18.9 μM and 43.4 μM against HCN1 and HCN4 (high Cl-). CP-339818 has significantly weaker blocking effects on Kv1.1, Kv1.2, Kv1.5, Kv1.6, Kv3.1-4, and Kv4.2 channels. CP-339818 selectively blocked Kv1.3, thereby inhibiting the activation process of human T cells. CP-339818 can be used to study the physiological functions of HCN and Kv channels.
    CP-339818
  • HY-W027553S1
    Ipidacrine-d10
    Ipidacrine-d9 (NIK-247-d9 (free base)) is the deuterium labeled Ipidacrine (HY-W027553). Ipidacrine is orally active and brain-penetrant AChE and BuChE inhibitors with IC50 values of 1 μM and 1.9 μM, respectively, which is also a partial agonist of M2-cholinergic receptors and a reversible cholinesterase inhibitor. Ipidacrine has a stimulating effect on neuromuscular transmission and excitation along the nerve fibres with a moderately anti-pain effect. Ipidacrine is an aminopyridines and is structurally similar to Tacrine (HY-111338). Ipidacrine is effective in various amnesia models, improves erectile function and inhibits K+ and Na+-channels in the neuronal membrane in diabetic rats. Ipidacrine is promising for research of Alzheimer’s disease, ischaemic stroke, idiopathic neuropathy of the facial nerve, diabetes mellitus-induced erectile dysfunction and other deficits in central or peripheral cholinergic deseases.
    Ipidacrine-d<sub>10</sub>
  • HY-101981S4
    Uridine 5'-monophosphate-13C9 dilithium
    		Activator
    Uridine 5'-monophosphate-13C9 (5'- Uridylic acid-13C9) dilithium is 13C-labeled Uridine 5'-monophosphate (HY-101981). Uridine 5'-monophosphate (5'-Uridylic acid) is an orally active mitochondrial ATP-dependent potassium channel activator that has a protective effect on the heart. Uridine 5'-monophosphate can promote the synthesis of CDP-choline and induce apoptosis in intestinal epithelial cells, which is beneficial for gut development and reduces diarrhea.
    Uridine 5'-monophosphate-<sup>13</sup>C<sub>9</sub> dilithium
  • HY-176856
    Maxi-K modulator 1
    		Modulator
    Maxi-K modulator 1 (Example 1) is a Maximum conductance calcium-activated potassium (Maxi-K) channel modulator. Maxi-K modulator 1 has a potent stimulating effect on Maxi-K channel activity. Maxi-K modulator 1 can be used for fragile X syndrome research.
    Maxi-K modulator 1
  • HY-P5916
    VSTx-3
    		Antagonist
    VSTx-3 is a KV channel blocker. VSTx-3 is demonstrated to be a potent, TTX-sensitive sodium channel blocker and especially, a potent blocker of NaV1.8 channels (IC50 0.19 μM for hNaV1.3, 0.43 μM for hNaV1.7 and 0.77 μM for hNaV1.8 channels).
    VSTx-3
  • HY-117160
    4-trans-Hydroxy-glibenclamide
    		Inhibitor
    rac-trans-4-hydroxy Glyburide is an active metabolite of the SUR1/Kir6.2 sulfonylurea inhibitor glyburide (HY-15206). It is formed from glyburide by the cytochrome P450 (CYP) isoforms CYP2C8 and CYP2C9. rac-trans-4-hydroxy Glyburide inhibits glyburide binding to rat brain synaptosomes at the high and low affinity sites of SUR1/Kir6.2 with IC50 values of 0.95 and 100 nM, respectively.
    4-trans-Hydroxy-glibenclamide
  • HY-B0551AR
    Doxapram hydrochloride hydrate (Standard)
    		Inhibitor
    Doxapram hydrochloride hydrate (Standard) is the analytical standard of Doxapram hydrochloride hydrate (HY-B0551A). This product is intended for research and analytical applications. Doxapram hydrochloride hydrate is a respiratory stimulant. Doxapram hydrochloride hydrate increases breathing rate and depth by acting on the brain's respiratory centers and peripheral chemoreceptors. Doxapram hydrochloride hydrate inhibits TASK-1, TASK-3, TASK-1/TASK-3 heterodimeric channel function with EC50s of 410 nM, 37 μM, 9 μM, respectively. Doxapram hydrochloride hydrate inhibits the Ca²⁺-activated potassium current (IC50 ≈ 13 μM) and Ca²⁺-independent potassium current (IC50 ≈ 20 μM) in type I cells of the carotid body. Doxapram hydrochloride hydrate significantly prolongs the effective refractory period of the atrium and has an anti-arrhythmic effect. Doxapram hydrochloride hydrate can be used for the study of respiratory depression such as post-anesthesia respiratory depression, chronic obstructive pulmonary disease and apnea of prematurity.
    Doxapram hydrochloride hydrate (Standard)
  • HY-14290R
    Pinacidil (Standard)
    		Activator
    Pinacidil (Standard) is the analytical standard of Pinacidil. This product is intended for research and analytical applications. Pinacidil is a potent activator of ATP-sensitive potassium channel. Pinacidil is an antihypertensive agent hyperpolarizes vascular smooth muscle by opening K+ channels. Pinacidil enhances K+-efflux in smooth muscle. Pinacidil has vasorelaxant properties. Pinacidil is able to inhibit spontaneous tone and of reducing agonist induced contractions. Pinacidil can be studied in research area such as cardiovascular diseases.
    Pinacidil (Standard)
  • HY-B0380AR
    Trimebutine maleate (Standard)
    		Inhibitor
    Trimebutine maleate (Standard) is the analytical standard of Trimebutine maleate (HY-B0380A). This product is intended for research and analytical applications. Trimebutine maleate is a multi-target inhibitor and opioid receptor agonist with antimuscarinic activity. Trimebutine maleate inhibits L-type Ca2+ channels and large-conductance calcium-activated potassium channels (BKCa channels), thereby inhibiting extracellular calcium influx and potassium ion efflux. Trimebutine maleate also targets Toll-like receptors, inhibits Toll-like receptor 2/4/7/8/9 signals, and inhibits LPS-induced IRAK1 activation, as well as ERK1/2, JNK and NF-κB activation, thereby exerting anti-inflammatory effects. Trimebutine maleate also induces tumor cell apoptosis by inhibiting the AKT/ERK pathway. Trimebutine maleate also inhibits excessive contraction of smooth muscle and can be used in the study of gastrointestinal disorders such as irritable bowel syndrome (IBS).
    Trimebutine maleate (Standard)
  • HY-B0563AR
    Ropivacaine hydrochloride monohydrate (Standard)
    		Inhibitor
    Ropivacaine (hydrochloride monohydrate) (Standard) is the analytical standard of Ropivacaine (hydrochloride monohydrate). This product is intended for research and analytical applications. Ropivacaine hydrochloride monohydrate is a potent sodium channel blocker and blocks impulse conduction via reversible inhibition of sodium ion influx in nerve fibrese. Ropivacaine is also an inhibitor of K2P (two-pore domain potassium channel) TREK-1 with an IC50 of 402.7 μM in COS-7 cell's membrane. Ropivacaine is widely used for regional anesthesia and neuropathic pain management in vivo.
    Ropivacaine hydrochloride monohydrate (Standard)
Cat. No. Product Name / Synonyms Application Reactivity