GR231118 TFA  (Synonyms: 1229U91 TFA; GW1229 TFA)

GR231118 TFA, an analogue of the C-terminus of neuropeptide Y, is a potent , competitive and relative seletive antagonist at human neuropeptide YY receptor with a pK_i of 10.4. GR231118 a potent agonist at the human neuropeptide YY4 receptor (pEC₅₀=8.6; pK_i=9.6) and a weak agonist at the human and rat neuropeptide Y Y2 and Y5 receptors. GR231118 also has high affinity for the mouse neuropeptide YY6 receptor (pK_i= 8.8)^[1].

2466.76

C₁₁₂H₁₇₁F₃N₃₄O₂₆

Sequence 1:IEP-{Dpr}-YRLRY-NH2;Sequence 1':IEP-{Dpr}-YRLRY-NH2 (Amide bridge:Glu2-Dpr4';Dpr4-Glu2')

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. E M Parker, et al. GR231118 (1229U91) and other analogues of the C-terminus of neuropeptide Y are potent neuropeptide Y Y1 receptor antagonists and neuropeptide Y Y4 receptor agonists. Eur J Pharmacol  [Content Brief]

  [2]. Y Dumont, et al. [(125)I]-GR231118: a high affinity radioligand to investigate neuropeptide Y Y(1) and Y(4) receptors. Br J Pharmacol. 2000 Jan;129(1):37-46.  [Content Brief]