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NS 1643 is a human ether-a-go-go related gene (hERG) KV11.1 channel activator (EC50 = 10.5 μM). Exhibits different molecular mechanisms of action at KV11.1 (hERG1) and KV11.2 (hERG2) channels. Displays antiarrhythmic activity in vitro.
NS 1643 is also offered as part of the Tocriscreen 2.0 Max. Find out more about compound libraries available from Tocris.
|Storage||Store at +4°C|
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
|Solvent||Max Conc. mg/mL||Max Conc. mM|
The following data is based on the product molecular weight 380.24. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.
|Concentration / Solvent Volume / Mass||1 mg||5 mg||10 mg|
|1 mM||2.63 mL||13.15 mL||26.3 mL|
|5 mM||0.53 mL||2.63 mL||5.26 mL|
|10 mM||0.26 mL||1.31 mL||2.63 mL|
|50 mM||0.05 mL||0.26 mL||0.53 mL|
References are publications that support the biological activity of the product.
Hansen et al (2006) Activation of human ether-a-go-go related gene potassium channels by the diphenylurea 1,3-bis-(2-hydroxy-5-trifluoromethyl-phenyl)-urea (NS1643). Mol.Pharmacol. 69 266 PMID: 16219910
Casis et al (2006) Mechanism of action of a novel human ether-a-go-ao related gene channel activator. Mol.Pharmacol. 69 658 PMID: 16284303
Elmedyb et al (2007) Activation of ERG2 potassium channel by the diphenylurea NS1643. Neuropharmacology 53 283 PMID: 17610913
If you know of a relevant reference for NS 1643, please let us know.
Keywords: NS 1643, NS 1643 supplier, hERG, channel, activators, Antiarrhythmic, Potassium, KV, Channels, Human, Ether-A-Go-Go, Gene, voltage-gated, voltage-dependent, K+, NS1643, Voltage-Gated, 3062, Tocris Bioscience
Citations are publications that use Tocris products. Selected citations for NS 1643 include:
Perissinotti et al (2015) Kinetic model for NS1643 drug activation of WT and L529I variants of Kv11.1 (hERG1) potassium channel. Biophys J 108 1414 PMID: 25809254
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NS 1643 was used to understand its potassium channel opening properties. The product performed well under experimental conditions. Dissolving in ethanol is a better option than disssolving in DMSO as opposed to other K.V channel openers.
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Epilepsy is a brain disease that affects 60 million people globally. More than 20 anti-seizure drugs are currently available, but these do not address the underlying causes of the condition. This poster summarizes current knowledge about the development of the condition and highlights some approaches that have disease-modifying effects in proof-of-concept studies.
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