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G113 GR 64349 >96% GR 64349 peptide acts as an agonist of neurokinin (NK2) receptor, which leads to reduced NK2 response to kainate and AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid), but not to NMDA (N-methyl-D-aspartate).
G114 GR 73632 >97% GR 73632 interacts with neurokinin (NK1) receptor, which results in rhythmic tapping of hind-foot in gerbils. Administration of this peptide in the intra-ventral tegmental area (VTA) results in locomotor activity. It interacts with and activates NK1 receptors present on smooth muscle and interstitial cells of Cajal, resulting in elevated distention-induced peristalsis.
S2136 [Met-OH11]-Substance P ≥97% (HPLC) NK-1 agonist
N4267 Neurokinin A ≥97% (HPLC) Endogenous tachykinin agonist with preference for the NK-2 receptor, more potent bronchoconstrictor than Substance P.
N4143 Neurokinin B ≥95% (HPLC) Endogenous tachykinin agonist with preference for the NK-3 receptor. Potent bronchoconstrictor; may have neuromodulatory role in brain.
S6883 Substance P acetate salt hydrate ≥95% (HPLC), powder NK-1 agonist; potent vasodilator and hypotensive agent; induces salivation; increases capillary permeability; induces mast cell degranulation; putative neurotransmitter in sensory (pain) afferents.
S1136 [Nle11]-Substance P ≥97% (HPLC) Substance P analog that avoids methionine oxidation problems
S3672 [Sar9, Met(O2)11]-Substance P ≥95% (HPLC) Highly selective NK-1 receptor agonist.
S2314 δ-Aminovaleryl-[Pro9, Leu(N-Me)10]-Substance P Fragment 7-11 >99% (HPLC), solid Selective receptor agonist for NK1.
S6272 Substance P Fragment 1-7 ≥97% (HPLC) Fragment that gives depressor and bradycardic effects when applied to the nucleus tractus solitarius
S2886 [pGlu5]-Substance P Fragment 5-11 ≥95% (HPLC)  
S2275 Acetyl-[Arg6, Sar9, Met(O2)11]-Substance P Fragment 6-11 ≥95% Selective NK-1 receptor agonist.