Potassium Channels

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  1. potassium-competitive acid Blocker

    TAK-438 is a novel potassium-competitive acid blocker.
  2. K+/Na+/Ca+ Channel Blocker

    Dronedarone Hydrochloride is a non-iodinated amiodarone derivative that inhibits Na+, K+ and Ca2+ currents.
  3. Gardos channel blocker

    Senicapoc (ICA-17043) is a potent and selective Gardos channel blocker with IC50 value of 11 nM. It blocks Ca2+-induced rubidium flux from human RBCs with an IC50 value of 11 nM and inhibits RBC dehydration with IC50 of 30 nM.
  4. Vernakalant is an investigational mixed ion channel blocker that can terminate acute atrial fibrillation (AF) in humans at 2 to 5 mg/kg and may be more atrial-selective than available agents.
  5. NMDA receptor antagonist

    Orphenadrine citrate is a NMDA receptor antagonist with Ki of 6.0 +/- 0.7 μM, HERG potassium channel blocker.
  6. Amiodarone hydrochloride is an antiarrhythmic drug for inhibition of ATP-sensitive potassium channel with IC50 of 19.1 μM.
  7. KATP channel antagonist

    Mitiglinide is a blood glucose-lowering drugs, stimulating insulin secretion by closing the ATP-sensitive K+ channels in pancreatic beta-cells.
  8. KCa3.1 channel activator

    NS 309 is a positive modulator of small- and intermediate- conductance Ca2+-activated K+ channels (KCa2 and KCa3.1 channels).
  9. Wnt/beta-catenin inhibitor

    Hexachlorophene is a potent KCNQ1/KCNE1 potassium channel activator with EC50 of 4.61 ?? 1.29 uM; also is an inhibitor of Wnt/beta-catenin signaling.
  10. Kir2 family channels inhibitor

    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.
  11. TREK-1/2 Activator

    ML335 is a potent and selective TREK-1/2 Activator. ML335 is an agonist for OPRM1-OPRD1 heterdimerization with an EC50 of 403 nM, and selectivities vs. OPRM1, OPRD1, and HTR5A of 37, 2.7, and >99, respectively.
  12. hERG channel activator

    NS-1643 is a Human ether-a-go-go related gene (hERG) KV11.1 channel activator (EC50 = 10.5 uM).
  13. Doxapram inhibits TASK-1, TASK-3, TASK-1/TASK-3 heterodimeric channel function with EC50 of 410 nM, 37 μM, 9 μM, respectively. Doxapram is a respiratory stimulant. Administered intravenously, doxapram stimulates an increase in tidal volume, and respiratory rate.
  14. Potassium channel activator

    NS1619 is a Bkca opener or large-conductance Ca2+-activated potassium (BKCa, KCa1.1) channel activator.
  15. K+ Channel inhibitor

    K+ Channel inhibitor, building block for synthesis of dihydropyrazolopyrimidine inhibitors of Kv1.5 (IKur).
  16. Clofilium tosylate, a potassium channel blocker, induces apoptosis of human promyelocytic leukemia (HL-60) cells via Bcl-2-insensitive activation of caspase-3. Antiarrhythmic agent.
  17. K+ (KATP) channel activator

    Y-26763 is a K+ channel opener and active metabolite of Y-27152. Y-26763 is an ATP-sensitive K+ (KATP) channel activator.
  18. Nucleotide Analogue

    Uridine 5'-monophosphate disodium salt is a nucleotide analogue that activates mitochondrial ATP-dependent potassium channels, providing cardioprotective effects. This compound facilitates the synthesis of CDP-choline and induces apoptosis in intestinal epithelial cells, supporting gut development and reducing the incidence of diarrhea. It serves as a valuable tool for studies related to cardiac health and gastrointestinal function.
  19. Calcium Sensitiser

    OR-1896 is a potent calcium sensitizer and active metabolite of Levosimendan, primarily targeting phosphodiesterase (PDE) III isoforms. It exhibits significant vasodilatory effects and can activate ATP-sensitive potassium channels, enhancing calcium sensitivity. OR-1896 has been shown to reduce cardiomyocyte apoptosis, alleviate cardiac remodeling, and mitigate myocardial inflammation, making it valuable for research in cardiovascular disease therapies.
  20. Kv2.1 Inhibitor

    Kv2.1-IN-1 is a selective inhibitor of the Kv2.1 potassium channel, demonstrating a potent inhibitory activity with an IC50 of 0.07 μM. It exhibits over 130-fold selectivity against other potassium, sodium, and calcium channels. Kv2.1-IN-1 has been shown to reduce H2O2-induced apoptosis in HEK293 cells and provides significant neuroprotective effects in models of middle cerebral artery occlusion (MCAO) in rats. This compound is useful for research into ischemic stroke and related neurological conditions.
  21. Potassium Binder

    Patiromer is a selective, non-absorbable intestinal potassium binder that targets potassium ions through a reversible exchange with calcium ions. It effectively lowers serum potassium levels while promoting fecal potassium excretion and reducing serum aldosterone levels. Patiromer is utilized in research on hyperkalemia associated with conditions such as chronic kidney disease, diabetes, and heart failure, and is particularly beneficial in studies aimed at enhancing the efficacy of renin-angiotensin-aldosterone system inhibitor (RAASi) therapies.
  22. Antiarrhythmic Agent

    Quinidine gluconic acid is an antiarrhythmic agent primarily targeting potassium channels, exhibiting an IC50 of 19.9 μM. This compound is a potent, orally active inhibitor of cytochrome P450 enzymes and has been shown to induce apoptosis in certain cell types. Quinidine gluconic acid is utilized in research related to cardiac arrhythmias as well as malaria studies, providing valuable insights into these complex biological processes.
  23. SERT/NET Inhibitor

    Amitriptyline is a tricyclic antidepressant that primarily inhibits the serotonin transporter (SERT) and norepinephrine transporter (NET), enhancing synaptic levels of serotonin and norepinephrine. With a Ki value of 3.45 nM for SERT and 13.3 nM for NET, Amitriptyline demonstrates significant antidepressant activity. Additionally, it exhibits agonistic properties at α2A adrenergic and TrkA/TrkB receptors, contributing to its analgesic and neurotrophic effects. Furthermore, Amitriptyline interacts with various receptors, including muscarinic cholinergic and H1 receptors, which may lead to a variety of side effects, while its ability to block sodium channels and hERG potassium channels raises concerns regarding cardiotoxicity.
  24. Stable Isotope

    Hydrochlorothiazid-d2 is the deuterated form of Hydrochlorothiazide, a thiazide diuretic known for its role in inhibiting the transforming growth factor-beta (TGF-β)/Smad signaling pathway. This compound exhibits direct vascular relaxation by activating calcium-activated potassium channels, contributing to its antihypertensive properties. Hydrochlorothiazid-d2 is valuable in research applications involving the study of cardiovascular function, fibrosis reduction, and the overall effects of diuretics on systemic blood pressure regulation.
  25. Stable Isotope

    Hydrochlorothiazid-13C,d2 is a stable isotope-labeled form of Hydrochlorothiazide (HCTZ), a thiazide diuretic that functions by inhibiting the TGF-β/Smad signaling pathway. This compound exhibits direct vascular relaxant effects through the activation of calcium-activated potassium channels. Hydrochlorothiazide is primarily utilized in research to improve cardiac function, reduce fibrosis, and exhibit antihypertensive properties, making it a valuable tool for studies on cardiovascular health and hypertension management.
  26. Stable Isotope

    Hydrochlorothiazide-15N2,13C,d2 is a stable isotope-labeled derivative of hydrochlorothiazide, incorporating 15N and deuterium for enhanced tracking in metabolic studies. As a thiazide diuretic, hydrochlorothiazide inhibits the TGF-β/Smad signaling pathway, which plays a crucial role in cardiovascular remodeling. This compound exhibits direct vascular relaxation by activating calcium-activated potassium channels, thereby improving cardiac function, reducing fibrosis, and delivering antihypertensive effects. It is ideal for research applications focusing on cardiovascular health and the mechanisms of diuretic therapy.
  27. Kir2.1 Agonist

    Tetramisole acts as a selective agonist for the inward rectifier potassium channel Kir2.1, displaying an EC50 of approximately 30 μM. This compound enhances the forward transport of Kir2.1 channels, hyperpolarizing the resting potential and shortening action potential duration, while also inhibiting intracellular calcium overload and PKA signaling. Additionally, Tetramisole exhibits anti-arrhythmic and anti-myocardial remodeling properties. It is valuable in cardiac electrophysiology studies and investigations focused on myocardial ischemia and heart failure.
  28. Stable Isotope

    Tolbutamide-d9 is a deuterated form of Tolbutamide, which primarily targets ATP-sensitive potassium channels. As a first-generation sulfonylurea, it functions as an oral hypoglycemic agent, playing a critical role in glucose regulation. This stable isotope is valuable for metabolic research and isotopic tracing studies, facilitating investigations into pharmacokinetics and the mechanism of action of sulfonylureas.
  29. Autophagy Inducer

    Desethylamiodarone hydrochloride is a significant active metabolite of Amiodarone, primarily functioning as an autophagy inducer. It is produced through the action of CYP3A isoenzymes and plays a critical role in cellular processes affecting autophagy. This compound is utilized in research applications focusing on cardiovascular pharmacology and cellular stress responses, due to its influence on potassium channels and potential therapeutic implications in arrhythmias.
  30. Stable Isotope

    Amiodarone-d4 hydrochloride is a deuterium-labeled derivative of the Class III antiarrhythmic agent, Amiodarone hydrochloride, which primarily targets the human ether-a-go-go-related gene (hERG) potassium channel with an IC50 of approximately 45 nM. This compound influences vital cellular processes, promoting fibroblast proliferation and myofibroblast differentiation through the activation of ERK1/2 and p38 MAPK signaling pathways. Amiodarone-d4 hydrochloride is an essential tool for research into supraventricular and ventricular arrhythmias, providing valuable insights into arrhythmia mechanisms and potential therapeutic strategies.
  31. Stable Isotope

    Amiodarone-d10 hydrochloride is a deuterium-labeled derivative of Amiodarone. This compound acts primarily as an antiarrhythmic agent, exerting its effects through the inhibition of ATP-sensitive potassium channels, with an IC50 value of 19.1 μM. It is utilized in pharmacokinetic studies and research focused on cardiovascular diseases, providing insights into drug metabolism and action mechanisms.
  32. Stable Isotope

    Uridine 5'-monophosphate-13C9,15N2 dilithium is a stable isotope-labeled form of uridine 5'-monophosphate, incorporating both 13C and 15N isotopes. This compound acts as an orally active mitochondrial ATP-dependent potassium channel activator, demonstrating cardioprotective effects. Additionally, uridine 5'-monophosphate promotes the synthesis of CDP-choline and induces apoptosis in intestinal epithelial cells, making it valuable for research in gut development and in studies related to gastrointestinal health.
  33. Antiarrhythmic Agent

    Quinidine sulfate is an antiarrhythmic agent that primarily targets cardiac ion channels, particularly potassium channels. It exhibits potent K+ channel blocking activity with an IC50 of 19.9 μM and has been shown to induce apoptosis in various cell types. Additionally, quinidine sulfate is utilized in malaria research, making it valuable for studies related to both cardiovascular and infectious diseases.
  34. Antiarrhythmic Agent

    Quinidine polygalacturonate is an antiarrhythmic agent that primarily targets potassium channels, exhibiting an IC50 of 19.9 μM. It also functions as a selective inhibitor of cytochrome P450db and has the capability to induce apoptosis. This compound is particularly useful in research focused on cardiac arrhythmias and malaria studies, making it a valuable reagent for pharmacological investigations.
  35. Vasodilator

    KMUP-1 is a xanthine derivative that acts as a vasodilator through the inhibition of phosphodiesterase (PDE) and activation of soluble guanylyl cyclase (sGC). It stimulates the nitric oxide/sGC/cyclic GMP signaling pathway and facilitates the opening of potassium channels. Additionally, KMUP-1 has been shown to reduce ischemia-induced cardiomyocyte apoptosis. This compound is relevant for studies in cardiovascular health and anti-inflammatory research.
  36. Potassium Channel Inhibitor

    DPO-1 is a selective inhibitor of Kv1.5 and Kv1.3 potassium channels (EC50 = 3.1 μM) with notable immunomodulatory and anti-inflammatory properties. It effectively reduces Kv1.3 current density, diminishes Ca2+ influx in calcium-depleted Jurkat cells, and inhibits IL-2 secretion in activated Jurkat cells. Additionally, DPO-1 obstructs uric acid sodium (MSU)-induced NLRP3 inflammasome activation by interfering with Kv1.5-mediated K+ efflux. This reagent is valuable for research into immunological disorders and atrial fibrillation.
  37. CO Donor

    Tricarbonyldichlororuthenium(II) dimer serves as a carbon monoxide (CO) donor, facilitating various biological processes. This compound demonstrates notable anti-inflammatory and antioxidant properties, in addition to its protective effects on gastric mucosa. Furthermore, Tricarbonyldichlororuthenium(II) dimer exhibits CO-independent effects on several potassium channels, highlighting its significance in cellular physiology and potential therapeutic applications.
  38. Stable Isotope

    Desethyl Amiodarone-d4 hydrochloride is a deuterium-labeled analog of Desethylamiodarone hydrochloride, a significant active metabolite of the antiarrhythmic drug Amiodarone. This compound predominantly arises from the metabolic activity of CYP3A isoenzymes. Desethylamiodarone hydrochloride demonstrates potent inhibition of ATP-sensitive potassium channels, with an IC50 value of 19.1 μM, making it a valuable tool for research in cardiac electrophysiology and drug metabolism studies.
  39. Stable Isotope

    Diazoxide-d3 is a deuterium-labeled derivative of Diazoxide, an ATP-sensitive potassium channel activator. This compound is primarily utilized in research to investigate insulin regulation and has potential applications in the treatment of hyperinsulinism. Its unique isotopic labeling allows for enhanced tracking and analysis in various biochemical studies.
  40. ATX Inhibitor/PPARγ Agonist

    EL244 is a dual inhibitor of Autotaxin (ATX), with an IC50 of 50 nM, and a selective agonist of PPARγ, exhibiting an IC50 of 1.3 μM. This compound shows low cytotoxicity in human HepG2 cells, with an EC50 of 81.2 μM, and minimal inhibition of the cardiac hERG potassium channel (12% at 25 μM). EL244 effectively reduces pulmonary Lysophosphatidic Acid (LPA) levels, mitigates fibrosis, and enhances respiratory function in vivo, making it a valuable tool for the study of idiopathic pulmonary fibrosis and interstitial lung disease (ILD).
  41. Potassium-Competitive Acid Blocker

    Vonoprazan hydrochloride is a potassium-competitive acid blocker (P-CAB) that inhibits H+,K+-ATPase activity, exhibiting an IC50 of 19 nM at pH 6.5. Its potent antisecretory effects make it a valuable reagent in research related to acid-related conditions, including gastroesophageal reflux disease and peptic ulcer disease. Vonoprazan hydrochloride is also utilized for studies focusing on the eradication of Helicobacter pylori, contributing to advancements in gastrointestinal therapeutics.
  42. Antidiabetic Agent

    4-Hydroxytolbutamide is a metabolite of Tolbutamide and acts primarily as an antidiabetic agent. It is involved in glucose metabolism by functioning as a potassium channel blocker, influencing insulin secretion from pancreatic beta-cells. This compound is particularly relevant in diabetes research, where it is used to study the pharmacodynamics and pharmacokinetics of sulfonylurea derivatives. Additionally, its metabolism by CYP2C8 and CYP2C9 contributes to understanding drug interactions in antidiabetic therapies.
  43. Anti-microbial Agent/Kir3.2 Blocker

    3,6-Diaminoacridine dihydrochloride is a potent antimicrobial agent that acts primarily by intercalating into bacterial DNA, disrupting replication and transcription, and leading to bacterial cell lysis. Additionally, it serves as a Kir3.2 potassium channel blocker, making it a valuable tool for investigating neurological conditions such as Down syndrome. Furthermore, due to its ability to penetrate skin layers and accumulate in the cell nucleus, long-term exposure requires careful handling due to potential carcinogenic effects. This reagent is applicable in studies concerning microbial resistance and neurological phenotype exploration.
  44. Anti-microbial Agent/Kir3.2 Blocker

    3,6-Diaminoacridine sulfate functions primarily as an anti-microbial agent and a Kir3.2 potassium channel blocker. This acridine compound exhibits broad-spectrum antibacterial activity by intercalating into bacterial DNA, disrupting replication and transcription, ultimately leading to cell lysis. Additionally, it is utilized in neurological research, particularly in studying the phenotype associated with Down syndrome. Notably, 3,6-Diaminoacridine sulfate exhibits the capability to penetrate the skin's stratum corneum and accumulate in the cell nucleus, with prolonged exposure possibly linked to carcinogenic effects.
  45. Potassium Channel Activator

    Kaurenoic acid is a diterpene that acts as a potassium channel activator. It exhibits various biological activities, including antibacterial, anti-inflammatory, anticonvulsant, analgesic, and aortic vasodilating effects. This compound is primarily utilized in research related to neuroprotection, cardiovascular health, and the modulation of ion channel activity.
  46. Aortic Vasodilator

    KMUP-4, a xanthine derivative, primarily acts as an aortic vasodilator by enhancing cyclic guanosine monophosphate (cGMP) levels. It promotes aortic relaxation through both endothelium-dependent and independent pathways by inhibiting phosphodiesterases (PDEs) and activating potassium channels, which also increases cyclic adenosine monophosphate (cAMP). KMUP-4 is a valuable reagent for research on cardiovascular diseases, providing insights into vascular relaxation mechanisms and potential therapeutic targets.
  47. PDE4 Inhibitor

    L-869298 is a potent and selective inhibitor of phosphodiesterase 4 (PDE4), demonstrating an IC50 value of 0.5 nM for the PDE4A isoform. This compound exhibits minimal activity against the hERG potassium channel, making it a valuable tool for studies focused on inflammation, neurodegeneration, and other PDE4-related pathways. Its specificity and efficacy make it a suitable candidate for research applications in therapeutic development targeting PDE4-mediated signaling.
  48. Potassium-competitive Acid Blocker

    KFP-H008 is an orally active potassium-competitive acid blocker that targets H+-K+-ATPase to inhibit gastric acid secretion. This compound has shown efficacy in reducing ethanol-induced gastric ulcer index and decreasing malonaldehyde levels, along with the expression of pro-inflammatory cytokines in vivo. KFP-H008 also downregulates p-p38 MAPK and p65 NF-κB expression, demonstrating its potential in mitigating gastric inflammation. This reagent is valuable for research into acid-related diseases, including gastric ulcers and gastric epithelial cell damage.
  49. DPP8/9 Inhibitor

    DPP8/9-IN-2 is a selective inhibitor of dipeptidyl peptidase 8 and 9 (DPP8/DPP9) with potent inhibitory activity, exhibiting IC50 values of 0.22 nM and 3 nM, respectively. This compound has been implicated in research related to tumor biology and other pathological conditions. Notably, DPP8/9-IN-2 demonstrates certain cardiotoxicity, indicated by its IC50 values of 0.7 μM for the hERG potassium channel, 29.0 μM for the Nav1.5 sodium channel, and 27.7 μM for the Cav1.2 calcium channel.
  50. Potassium Fluorescent Indicator

    Asante potassium green-2 (TMA) is a cell-impermeable potassium-sensitive fluorescent indicator with an excitation/emission spectrum of 525/545 nm. It selectively detects intracellular potassium ion concentrations, making it valuable for studies involving ion channel activity and cellular signaling. This reagent is essential for investigating potassium homeostasis and its implications in various physiological processes and pathologies.

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