Date published: 2025-12-20

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CP-339818 (CAS 478341-55-8)

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Application:
CP-339818 is a compound blocking both Kv1.3 and Kv1.4
CAS Number:
478341-55-8
Molecular Weight:
340.89
Molecular Formula:
C21H24N2•HCl
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Blocks both Kv1.3 and Kv1.4. Kv1.3 is expressed in the brain and in effector memory Tem (T) cells, and Kv1.4 is expressed in brain cells. Kv1.3 and Kv1.4 are members of the Shaker family of voltage-gated potassium channels. Both channels are involved in setting the membrane potential of neurons. Kv1.3 also maintains the membrane potential for T memory cells and is up-regulated upon T cell activation, contributing to multiple immune processes and disorders. Blockers of Kv1.3 have long been sought for therapeutic benefit, and they are also valuable tools for studying the immune system. CP-339818 is valuable for immune system studies, where the absence of Kv1.4 makes it functionally selective for Kv1.3, and it has shown suppression of T cell activation. CP-339818 is also valuable for the study of Kv1.4 function.


CP-339818 (CAS 478341-55-8) References

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  2. Novel pharmacological activity of loperamide and CP-339,818 on human HCN channels characterized with an automated electrophysiology assay.  |  Lee, YT., et al. 2008. Eur J Pharmacol. 581: 97-104. PMID: 18162181
  3. 4-Phenoxybutoxy-substituted heterocycles--a structure-activity relationship study of blockers of the lymphocyte potassium channel Kv1.3.  |  Bodendiek, SB., et al. 2009. Eur J Med Chem. 44: 1838-52. PMID: 19056148
  4. Voltage-gated potassium channels as therapeutic targets.  |  Wulff, H., et al. 2009. Nat Rev Drug Discov. 8: 982-1001. PMID: 19949402
  5. Calcium-activated and voltage-gated potassium channels of the pancreatic islet impart distinct and complementary roles during secretagogue induced electrical responses.  |  Jacobson, DA., et al. 2010. J Physiol. 588: 3525-37. PMID: 20643768
  6. Pyramidal neurons in the superficial layers of rat retrosplenial cortex exhibit a late-spiking firing property.  |  Kurotani, T., et al. 2013. Brain Struct Funct. 218: 239-54. PMID: 22383041
  7. Loureirin B, an essential component of Sanguis Draxonis, inhibits Kv1.3 channel and suppresses cytokine release from Jurkat T cells.  |  Yin, S., et al. 2014. Cell Biosci. 4: 78. PMID: 25937895
  8. A whole-genome RNAi screen uncovers a novel role for human potassium channels in cell killing by the parasite Entamoeba histolytica.  |  Marie, C., et al. 2015. Sci Rep. 5: 13613. PMID: 26346926
  9. Contribution of KV1.5 Channel to Hydrogen Peroxide-Induced Human Arteriolar Dilation and Its Modulation by Coronary Artery Disease.  |  Nishijima, Y., et al. 2017. Circ Res. 120: 658-669. PMID: 27872049
  10. Plasma Metabolomic Profiling after Feeding Dried Distiller's Grains with Solubles in Different Cattle Breeds.  |  Zhang, J., et al. 2023. Int J Mol Sci. 24: PMID: 37445854
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  12. Regulation of mammalian Shaker-related K+ channels: evidence for non-conducting closed and non-conducting inactivated states.  |  Jäger, H., et al. 1998. J Physiol. 506 (Pt 2): 291-301. PMID: 9490854

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

CP-339818, 5 mg

sc-252641
5 mg
$62.00