Potassium Channels

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  1. Antimalarial

    Quinine is a primary alkaloid of various species of Cinchona, optical isomer of Quinidine and an anti-malarial, skeletal, muscle relaxant.
  2. sodium-potassium pump inhibitor

    Digoxin is a sodium-potassium pump inhibitor.
  3. Ion channel blocker

    Vernakalant Hcl 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; in treatment of antiarrhythmic.
  4. Kir7.1 potassium channels blocker

    ML418 is a selective, sub-micromolar pore blocker of Kir7.1 potassium channels. The inward rectifier potassium (Kir) channel Kir7.1 (KCNJ13) is a key regulator of melanocortin signaling in the brain, electrolyte homeostasis in the eye, and uterine muscle contractility during pregnancy.
  5. Kv1.3 blocker

    PAP-1 is a selective inhibitor of Kv1.3, voltage-gated potassium channel. PAP-1 (EC50=2 nM) potently inhibits human T effector memory cell proliferation and delayed hypersensitivity.
  6. Potassium Channel Blocker

    TRAM-34 is a highly selective blocker of intermediate conductance Ca2+-activated K+ channels (KCa3.1) (Kd = 20 nM). Exhibits 200-1500-fold selectivity over KV, BKCa, KCa2, Na+, CRAC and Cl- channels. Suppresses the reactivation of lymphocytes by mitogenic stimuli.
  7. HIF-1α inhibitor

    Minocycline hydrochloride is a broad-spectrum tetracycline antibiotic, acting by binding to the bacterial 30S ribosomal subunit and inhibiting protein synthesis.
  8. Kir6.2/SUR inhibitor

    Glimepiride is a potent Kir6.2/SUR inhibitor with IC50 of 3.0 nM, 5.4 nM, and 7.3 nM for SUR1, SUR2A and SUR2B, used in the treatment of type 2 diabetes mellitus.
  9. K+ channel and CFTR Cl- channel blocker

  10. Hydralazine hydrochloride is a hydrochloride salt of hydralazine (Apresoline) that is a direct-acting smooth muscle relaxant with an IC50 of 1.9 mM.
  11. Minoxidil (U-10858) is a selective ATP dependent K+ (Kir6) channel activator.
  12. Nateglinide(Starlix) is an insulin secretagog agent that lowers blood glucose levels by stimulating insulin secretion from the pancreas.
  13. Kir6 (KATP) channel opener

    Nicorandil (SG-75) is potassium channel activator.
  14. Potassium Channel inhibitor

    Repaglinide is a potent short-acting insulin secretagogue that acts by closing ATP-sensitive potassium (KATP) channels in the plasma membrane of the pancreatic beta cell.
  15. potassium currents blocker

    Gliclazide is used as an antidiabetic. It is a whole-cell beta-cell ATP-sensitive potassium currents blocker with an IC50 of 184 nM. 

  16. BeKm-1 is a HERG (human ether-a-go-go-related gene) blocking compound. BeKm-1 can be used for the research of heart disease.
  17. ROMK inhibitor

    VU590 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 is not a good probe of ROMK function in the kidney.
  18. KCNQ2/3 potassium channels activator

    QO-40 is an activator of KCNQ2/3 potassium channels.
  19. Ca2+-activated K+ channel activator

    NS19504 is a Ca2+-activated K+ channel (BK channel, KCa1.1 channel) activator (EC50=11.0 μM) with relaxing effect on bladder smooth muscle spontaneous phasic contractions.

  20. potassium current activator

    NS5806, a potent potassium current activator, increases KV4.3/KChIP2 peak current amplitudes with an EC50 of 5.3 μM. NS5806 slows KV4.3 and KV4.2 current dacay in channel complexes containing KChIP2.
  21. Potassium Channel inhibitor

    Acecainide, also known as N-acetylprocainamide and ASL 601, is the N-acetylated metabolite of procainamide. Acecainide is a Class III antiarrhythmic agent. It can be given either intravenously or orally, and is eliminated primarily by renal excretion.
  22. Serotonergic Receptor Antagonist

    Hymenidin is a natural antagonist of serotonergic receptors, exhibiting significant inhibitory effects on voltage-gated potassium channels. This compound demonstrates the ability to induce apoptosis in cancer cells, making it a valuable tool for research in cancer biology and therapeutics targeting serotonergic signaling pathways. Its dual action on ion channels and receptor antagonism positions Hymenidin as a noteworthy reagent for exploring complex cellular mechanisms in neurobiology and oncology.
  23. K+ Channels Activator

    1-EBIO is an activator of Ca2+-sensitive K+ channels, playing a crucial role in the modulation of membrane potential and cellular excitability. This compound is utilized in research to investigate the physiological functions and pathophysiological roles of K+ channels, contributing to a deeper understanding of cellular signaling processes and potential therapeutic targets in various diseases.
  24. Anti-microbial Agent/Kir3.2 Blocker

    3,6-Diaminoacridine hemisulfate is an acridine compound that functions primarily as a broad-spectrum antimicrobial agent and a Kir3.2 potassium channel blocker. Its mechanism involves insertion into bacterial DNA, thereby disrupting replication and transcription, which ultimately leads to bacterial lysis. Additionally, this compound is utilized in research to investigate the neurological phenotype associated with Down syndrome. Due to its ability to penetrate the stratum corneum and accumulate in the cell nucleus, prolonged exposure warrants caution due to potential oncogenic effects.
  25. Stable Isotope

    Terfenadine-d3 is the deuterated form of Terfenadine, which primarily targets the hERG potassium channel as a potent open-channel blocker with an IC50 of 204 nM. As an H1 histamine receptor antagonist, Terfenadine-d3 demonstrates significant biological activity by inducing apoptosis in melanoma cells through the modulation of calcium homeostasis. Its mechanism includes the generation of reactive oxygen species (ROS) and the subsequent activation of caspases -4, -2, and -9, making it valuable for research in cancer biology and apoptosis pathways.
  26. KCNQ2 activator

    Ebio1 is a selective activator of the voltage-gated potassium channel KCNQ2. It enhances KCNQ2 activity by stabilizing an extended channel gate conformation, resulting in increased conductance at a saturation voltage of +50 mV.
  27. HDAC inhibitor

    HL23 is a histone deacetylase (HDAC) inhibitor with demonstrated efficacy against hepatocellular carcinoma (HCC). It enhances acetylation at the TXNIP promoter, leading to upregulation of TXNIP expression and modulation of potassium channel activity, ultimately inducing TXNIP-dependent potassium deprivation. HL23 effectively suppresses HCC progression and metastasis, and exhibits a synergistic antitumor effect when combined with Sorafenib, outperforming the combination of Sorafenib and Vorinostat in preclinical models.
  28. TNFα/IL-2 Inhibitor

    Immuno modulator-1 is a potent inhibitor of TNFα and IL-2, displaying IC50 values of 4.7 nM and 26 nM, respectively, in human peripheral blood mononuclear cells (hPBMC). This compound is valuable for investigating immune response modulation and inflammatory pathways. Additionally, Immuno modulator-1 demonstrates a hERG potassium channel blocking effect, exhibiting a 20% inhibitory percentage at a concentration of 3 μM, making it relevant for studies involving cardiac safety profiles.
  29. Potassium Channel Inhibitor

    Endoxifen Z-isomer hydrochloride is a selective potassium channel inhibitor that acts as a potent metabolite of Tamoxifen, exhibiting over 100-fold increased potency compared to its parent compound. This compound effectively inhibits PKCβ1 kinase activity, leading to decreased phosphorylation of AKT at Ser473 and its substrates, which ultimately promotes apoptosis. Endoxifen Z-isomer hydrochloride demonstrates significant anticancer effects, particularly against hormone-resistant metastatic breast cancer, making it a valuable reagent for cancer research applications.
  30. Stable Isotope

    Trimebutine-d5 fumarate is a deuterium-labeled derivative of Trimebutine fumarate, functioning primarily as a multi-target inhibitor and opioid receptor agonist. This compound exhibits key biological activities, including the inhibition of L-type Ca2+ channels and large-conductance calcium-activated potassium channels (BKCa), which regulate calcium influx and potassium efflux. Additionally, Trimebutine-d5 fumarate targets Toll-like receptors, modulating inflammatory signaling pathways, and promotes apoptosis in tumor cells via the AKT/ERK pathway. Its applications are particularly relevant in the study of gastrointestinal disorders, including irritable bowel syndrome (IBS), due to its ability to inhibit excessive smooth muscle contraction.
  31. Progranulin secretion Activator

    Progranulin modulator-1 is a selective activator of progranulin (PGRN) secretion. It significantly increases PGRN levels in BV-2 cells and exhibits low cytotoxicity with an EC50 value of 83 nM for PGRN. Additionally, Progranulin modulator-1 inhibits the hERG potassium channel with an IC50 of 3100 nM, making it a valuable tool for research on neuroinflammation and associated neurodegenerative disorders.
  32. Anti-inflammatory Agent

    Siaresinolic acid is an anti-inflammatory compound derived from the leaves of Sabicea grisea. It exhibits significant antinociceptive properties by modulating ATP-dependent potassium channels and inhibiting the influx of leukocytes, plasma leakage, and the production of pro-inflammatory mediators such as TNF-α and IL-1β. Importantly, Siaresinolic acid demonstrates a lack of cytotoxicity in murine macrophages and does not affect locomotor activity even at elevated doses. This compound is suitable for research applications involving pleurisy and pain management.
  33. ASK1 Inhibitor

    ASK1-IN-11 is a potent inhibitor of apoptosis signal-regulating kinase 1 (ASK1), exhibiting an IC50 of less than 200 nM. This compound also demonstrates inhibitory effects on TNF-α, MYLK/MLCK kinases, and hERG potassium channels. The primary research applications of ASK1-IN-11 include investigations into inflammation-related pathways.
  34. Potassium Channel Inhibitor

    Dequalinium Chloride is a selective inhibitor of potassium channels sensitive to Apamin. This cationic, lipophilic compound exhibits mitochondrial toxicity and additionally acts as an antagonist of the α7 nicotinic acetylcholine receptor. Dequalinium Chloride demonstrates broad-spectrum antimicrobial properties, exhibiting both bactericidal and fungicidal activities, making it valuable for research in cellular physiology and microbiology.
  35. 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.
  36. 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.
  37. 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).
  38. 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.
  39. 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.
  40. 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.
  41. 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.
  42. 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.
  43. 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.
  44. 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.
  45. 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.
  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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