Cat. No. 1577

L-R4W2 Arg-Arg-Arg-Arg-Trp-Trp-NH2

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Biological Activity

Vanilloid TRPV1 (VR1) receptor antagonist peptide (IC50 ~ 0.1 μM); blocks Ca2+ currents in dorsal root ganglion neurons. Analgesic in vivo.

Technical Data


(Modifications: Trp-6 = C-terminal amide)

Soluble to 1 mg/ml in water
Desiccate at -20°C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.

Certificate of Analysis / Safety Data Sheet

Certificate of Analysis: View current batch
Safety Data Sheet: View Safety Data Sheet


Planells-Cases et al (2000) Arginine-rich peptides are blockers of VR-1 channels with analgesic activity. FEBS Lett. 481 131. PMID: 10996311.

Himmel et al (2002) The arginine-rich hexapeptide R4W2 is a stereoselective antagonist at the vanilloid receptor 1: a Ca2+ imaging study in adult rat dorsal root ganglion neurons. J.Pharmacol.Exp.Ther. 301 981. PMID: 12023528.

If you know of a relevant citation for this product please let us know.

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Keywords: L-R4W2, supplier, TRPV1, antagonists, peptide, Vanillioid, Receptors, VR1, TRPV, Channels, Transient, Receptor, Potential, TRPV Antagonists

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