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-126704
    Tedisamil
    Tedisamil (KC-8857) is an antiarrhythmic compound with important biological activities. Tedisamil exhibits a significant slowing effect on heart rate, which is achieved by inhibiting the transient outward potassium current (I(to)) in the atrium. Tedisamil inhibits multiple potassium currents, including IK, K(ATP), and PKA-activated chloride channels, thereby prolonging the cardiac action potential and QT interval, and increasing cardiac reentry. Tedisamil has antiarrhythmic effects on ventricular arrhythmias and atrial flutter in animal models.
    Tedisamil
  • HY-14187S1
    Amiodarone-d5 hydrochloride
    		Inhibitor
    Amiodarone-d5 hydrochloride is deuterated labeled Amiodarone (HY-14187). Amiodarone is an antiarrhythmic agent for inhibition of ATP-sensitive potassium channel with an IC50 of 19.1 μM.
    Amiodarone-d<sub>5</sub> hydrochloride
  • HY-108578
    RuBi-4AP
    		Inhibitor
    RuBi-4AP, a derivative of 4-aminopyridine (4AP; HY-B0604), is a caged Kv channel blocker. RuBi-4AP contains a photolabile protecting group, allowing its effect to be controlled precisely in both space and time with light. RuBi-4AP can be used for the research of neuronal excitability, synaptic transmission, and signal propagation.
    RuBi-4AP
  • HY-B0267AR
    Oxybutynin chloride (Standard)
    		Inhibitor
    Oxybutynin (chloride) (Standard) is the analytical standard of Oxybutynin (chloride). This product is intended for research and analytical applications. Oxybutynin chloride is an oral active and competitive mAChR antagonist with Kis of 14.3 and 5.55 nM for specific [3H]NMS binding in the mouse bladder and cerebral cortex, respectively. Oxybutynin chloride inhibits vascular Kv channels in a manner independent of anticholinergic effect, with an IC50 value of 11.51 μM. Oxybutynin chloride reduces muscle spasm in the bladder and urinary tract, can be used in study of overactive bladder syndrome (OAB). Oxybutynin (chloride) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Oxybutynin chloride (Standard)
  • HY-B0563BS
    Ropivacaine-d7 hydrochloride
    		Inhibitor
    Ropivacaine-d7 hydrochloride is a deuterium labeled Ropivacaine (hydrochloride) (HY-B0563B). Ropivacaine hydrochloride 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 neuropathic pain management in vivo.
    Ropivacaine-d<sub>7</sub> hydrochloride
  • HY-P5871
    Jingzhaotoxin-XII
    		Inhibitor
    Jingzhaotoxin-XII (JzTx-XII) is a specific Kv4.1 channel inhibitor with an IC50 of 0.363 μM. Jingzhaotoxin-XII interacts with the channels by modifying the gating behavior.
    Jingzhaotoxin-XII
  • HY-P5806
    Ergtoxin-1
    		Antagonist
    Ergtoxin-1 is a potassium channel blocker. Ergtoxin-1 is isolated from the venom of the Mexican scorpion Centruroides noxius. Ergtoxin 1 can block ERG-K+ channels in nerve, heart and endocrine cells.
    Ergtoxin-1
  • HY-129670
    KMUP-1
    		Activator
    KMUP-1 is a xanthine derivative with vasodilator activity. KMUP-1 is a inhibitor of phosphodiesterase (PDE) and activator of soluble guanylyl cyclase (sGC). KMUP-1 stimulates NO/sGC/cyclic GMP pathway. KMUP-1 has K+ channels opening activity. KMUP-1 ameliorates ischemia-induced cardiomyocyte apoptosis. KMUP-1 can be used for cardiovascular and anti-inflammatory study.
    KMUP-1
  • HY-17504D
    (3S,5R)-Rosuvastatin
    		Inhibitor
    (3S,5R)-Rosuvastatin is the (3S,5R)-enantiomer of Rosuvastatin. Rosuvastatin is a competitive HMG-CoA reductase inhibitor with an IC50 of 11 nM. Rosuvastatin potently blocks human ether-a-go-go related gene (hERG) current with an IC50 of 195 nM. Rosuvastatin reduces the expression of the mature hERG and the interaction of heat shock protein 70 (Hsp70) with the hERG protein. Rosuvastatin is very effective in lowering low-density lipoprotein (LDL) cholesterol, triglycerides, and C-reactive protein levels.
    (3S,5R)-Rosuvastatin
  • HY-110076
    VU590 dihydrochloride
    		Inhibitor
    VU590 dihydrochloride is a potent and moderately selective ROMK (Kir1.1) inhibitor, with an IC50 of 290 nM. VU590 also inhibits Kir7.1, with an IC50 of 8 μM. VU590 dihydrochloride is not a good probe of ROMK function in the kidney.
    VU590 dihydrochloride
  • HY-P2786A
    Phrixotoxin 2
    		Inhibitor
    Phrixotoxin 2 is a highly selective KV4.2 and KV4.3-channels blocker.
    Phrixotoxin 2
  • HY-P3168
    Martentoxin
    		Inhibitor
    Martentoxin, a 4,046 Da polypeptide toxin, is a large-conductance Ca2+-activated K+ (BKCa) channel inhibitor. Martentoxin attenuates NO release, inhibits iNOS activation and upregulates eNOS mRNA expression in HUVECs induced by TNF-α. Martentoxin can be used for vascular diseases research.
    Martentoxin
  • HY-118683
    KR-31378
    		Activator
    KR-31378 is a neuroprotectant with dose-dependent pharmacokinetic properties and relevant activity in rats. After intravenous and oral administration of KR-31378 in rats, its pharmacokinetic parameters showed dose-dependent changes, such as decreased clearance with increasing doses, good oral absorption, and comparable AUCs for intravenous and oral administration at different doses.
    KR-31378
  • HY-P5165
    Maurotoxin
    		Inhibitor
    Maurotoxin is a 34-residue and four disulde-bridged toxin that can be isolated from the chactoid scorpion (Scorpio maurus). Maurotoxin inhibits the Shaker potassium channels (ShB) K+ current with an IC50 of 2 nM.
    Maurotoxin
  • HY-P1280A
    Margatoxin TFA
    		Inhibitor
    Margatoxin TFA, an alpha-KTx scorpion toxin, is a high affinity inhibitor of Kv1.3 (Kd=11.7 pM). Margatoxin TFA inhibits the Kv1.2 (Kd=6.4 pM) and Kv1.1 (Kd=4.2 nM). Margatoxin TFA, a 39 amino-acid-long peptide, is isolated from the venom of the scorpion Centruroides margaritatus and widely used in ion channel research.
    Margatoxin TFA
  • HY-B0405AR
    Bupivacaine hydrochloride (Standard)
    		Inhibitor
    Bupivacaine (hydrochloride) (Standard) is the analytical standard of Bupivacaine (hydrochloride). This product is intended for research and analytical applications. Bupivacaine hydrochloride is a NMDA receptor inhibitor.Bupivacaine can block sodium, L-calcium, and potassium channels.Bupivacaine potently blocks SCN5A channels with the IC50 of 69.5 μM. Bupivacaine hydrochloride can be used for the research of chronic pain.
    Bupivacaine hydrochloride (Standard)
  • HY-106912A
    L-706000 free base
    		Inhibitor
    L-706000 (MK 499) free base is a potent hERG channel blocker with an IC50 of 32 nM. L-706000 free base is a class III antiarrhythmic agent that can be used for the study of malignant ventricular tachyarrhythmias.
    L-706000 free base
  • HY-P1426
    AmmTX3
    		Inhibitor
    AmmTX3 is a peptide toxin that can be isolated from the venom of the scorpion Androctonus mauretanicus. AmmTX3 is specific blocker of Kv4 channel. AmmTX3 inhibits the A-type K+ current (Ki: 131 nM).
    AmmTX3
  • HY-P5887
    Tertiapin-RQ
    		Inhibitor
    Tertiapin-RQ is an inward rectifier K+ channel blocker peptide with antidepressive effect.
    Tertiapin-RQ
  • HY-175244
    SOS1-IN-20
    		Inhibitor
    SOS1-IN-20 (Compound 12f) is an orally active SOS1 inhibitor with an IC50 of 5.11 nM against KRASG12C::SOS1. By disrupting the interaction between KRAS and SOS1, SOS1-IN-20 inhibits KRAS activation and downstream signal transduction. SOS1-IN-20 has an IC50 of 253 nM for p-ERK in PC-9 cells and 16.71 μM for hERG channel . SOS1-IN-20 can inhibit the proliferation of tumor cells and has antitumor activity.
    SOS1-IN-20
Cat. No. Product Name / Synonyms Application Reactivity