GR 231118

Potent NPY Y1 antagonist/NPY Y4 agonist. Binds to NPFF receptors CAS# 158859-98-4

GR 231118

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Chemical structure

GR 231118

3D structure

Chemical Properties of GR 231118

Cas No. 158859-98-4 SDF Download SDF
PubChem ID 24868178 Appearance Powder
Formula C110H170N34O24 M.Wt 2352.77
Type of Compound N/A Storage Desiccate at -20°C
Synonyms 1229U91, GW 1229
Solubility Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
Sequence IEPXYRLRY IEPXYRLRY*

(Modifications: X = Dpr, Amide Bridge = 2 - 4*, 4 - 2*, Tyr-9 = C-terminal amide)

SMILES CCC(C)C(C(=O)NC1CCC(=O)NCC(NC(=O)C2CCCN2C(=O)C(CCC(=O)NCC(NC(=O)C3CCCN3C1=O)C(=O)NC(CC4=CC=C(C=C4)O)C(=O)NC(CCCNC(=N)N)C(=O)NC(CC(C)C)C(=O)NC(CCCNC(=N)N)C(=O)NC(CC5=CC=C(C=C5)O)C(=O)N)NC(=O)C(C(C)CC)N)C(=O)NC(CC6=CC=C(C=C6)O)C(=O)NC(CCCNC(=N)N)C(=O)NC(CC(C)C)C(=O)NC(CCCNC(=N)N)C(=O)NC(CC7=CC=C(C=C7)O)C(=O)N)N
Standard InChIKey RJRBRCCJETZJLT-GSICZYLSSA-N
Standard InChI InChI=1S/C110H170N34O24/c1-9-59(7)87(111)103(165)133-73-39-41-85(149)127-55-81(99(161)139-79(53-63-27-35-67(147)36-28-63)97(159)131-71(19-13-45-125-109(119)120)93(155)137-77(49-57(3)4)95(157)129-69(17-11-43-123-107(115)116)91(153)135-75(89(113)151)51-61-23-31-65(145)32-24-61)142-102(164)84-22-16-48-144(84)106(168)74(134-104(166)88(112)60(8)10-2)40-42-86(150)128-56-82(141-101(163)83-21-15-47-143(83)105(73)167)100(162)140-80(54-64-29-37-68(148)38-30-64)98(160)132-72(20-14-46-126-110(121)122)94(156)138-78(50-58(5)6)96(158)130-70(18-12-44-124-108(117)118)92(154)136-76(90(114)152)52-62-25-33-66(146)34-26-62/h23-38,57-60,69-84,87-88,145-148H,9-22,39-56,111-112H2,1-8H3,(H2,113,151)(H2,114,152)(H,127,149)(H,128,150)(H,129,157)(H,130,158)(H,131,159)(H,132,160)(H,133,165)(H,134,166)(H,135,153)(H,136,154)(H,137,155)(H,138,156)(H,139,161)(H,140,162)(H,141,163)(H,142,164)(H4,115,116,123)(H4,117,118,124)(H4,119,120,125)(H4,121,122,126)/t59-,60-,69-,70-,71-,72-,73-,74-,75-,76-,77-,78-,79-,80-,81?,82?,83-,84-,87-,88-/m0/s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of GR 231118

DescriptionPotent neuropeptide Y (NPY) Y1 receptor antagonist (pA2 = 10 and 10.5 at rY1 and hY1, receptors respectively). Also a potent and selective NPY Y4 receptor agonist (pEC50 values are 6.0, 8.6 and 6.1 for rY2, hY4 and rY5 receptors respectively). Suppresses food intake in rats in vivo. Also has affinity for neuropeptide FF (NPFF) receptors in vitro (Ki = 43-73 nM).

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References on GR 231118

Synthesis of new C-25 and C-26 steroidal acids as potential ligands of the nuclear receptors DAF-12, LXR and GR.[Pubmed:28300583]

Steroids. 2017 May;121:40-46.

A new methodology to obtain C-25 and C-26 steroidal acids starting from pregnenolone is described. Construction of the side chain was achieved by applying the Mukaiyama aldol reaction with a non-hydrolytic work-up to isolate the trapped silyl enol ether with higher yields. Using this methodology we synthesized three new steroidal acids as potential ligands of DAF-12, Liver X and Glucocorticoid nuclear receptors and studied their activity in reporter gene assays. Our results show that replacement of the 21-CH3 by a 20-keto group in the side chains of the cholestane scaffold of DAF-12 or Liver X receptors ligands causes the loss of the activity.

Recruitment of bone marrow CD11b(+)Gr-1(+) cells by polymeric nanoparticles for antigen cross-presentation.[Pubmed:28317931]

Sci Rep. 2017 Mar 20;7:44691.

The objective of this study was to investigate the function of poly(lactic-co-glycolic acid) (PLGA) nanoparticles (NPs) on the activation of antigen-specific CD8(+) T cell responses via the CD11b(+)Gr(-)1(+) myeloid subpopulations in murine bone marrow (BM). PLGA NPs containing ovalbumin (OVA) were fabricated by the double-emulsion method. The CD11b(+)Gr-1(low)Ly-6C(high) and CD11b(+)Gr-1(high)Ly-6C(low) subsets from mice bone marrow were sorted and treated with the PLGA/OVA NPs, followed by co-culture with the carboxyfluorescein succinimidyl ester (CFSE)-labelled OT-I CD8(+) cells. Co-culture of OT-I CD8(+) T cells with PLGA/OVA NPs-primed CD11b(+)Gr-1(+) subsets upregulated the expression of IL-2, TNF-alpha, INF-gamma, granzyme B, and perforin, resulting in proliferation of CD8(+) T cells and differentiation into effector cytotoxic T lymphocytes (CTLs). In vivo proliferation of CFSE-labelled OT-I CD8(+) cells in response to OVA was also obtained in the animals immunized with PLGA/OVA NPs. The results presented in this study demonstrate the ability of polymeric NPs to recruit two CD11b(+)Gr(-)1(+) myeloid subsets for effective presentation of exogenous antigen to OT-I CD8(+) T cells in the context of major histocompatibility complex (MHC) class I, leading to an induction of antigen-specific cell proliferation and differentiation into effector cells.

Muscle-specific downregulation of GR levels inhibits adipogenesis in porcine intramuscular adipocyte tissue.[Pubmed:28360421]

Sci Rep. 2017 Mar 30;7(1):510.

Intramuscular adipose is conducive to good pork quality, whereas subcutaneous adipose is considered as waste in pig production. So uncovering the regulation differences between these two adiposes is helpful to tissue-specific control of fat deposition. In this study, we found the sensitivity to glucocorticoids (GCs) was lower in intramuscular adipocytes (IMA) compared with subcutaneous adipocytes (SA). Comparison of glucocorticoid receptor (GR) revealed that IMA had lower GR level which contributed to its reduced GCs sensitivity. Higher methylation levels of GR promotor 1-C and 1-H were detected in IMA compared with SA. GR expression decrease was also found in adipocytes when treated with muscle conditioned medium (MCM) in vitro, which resulted in significant inhibition of adipocytes proliferation and differentiation. Since abundant myostatin (MSTN) was detected in MCM by ELISA assay, we further investigated the effect of this myokine on adipocytes. MSTN treatment suppressed adipocytes GR expression, cell proliferation and differentiation, which mimicked the effects of MCM. The methylation levels of GR promotor 1-C and 1-H were also elevated after MSTN treatment. Our study reveals the role of GR in muscle fiber inhibition on intramuscular adipocytes, and identifies myostatin as a muscle-derived modulator for adipose GR level.

Agonist and antagonist activities on human NPFF(2) receptors of the NPY ligands GR231118 and BIBP3226.[Pubmed:11325787]

Br J Pharmacol. 2001 May;133(1):1-4.

Neuropeptide FF (NPFF) is a part of a neurotransmitter system acting as a modulator of endogenous opioid functions. At this time, no non-peptide or peptide NPFF-antagonists have been discovered. Here, we demonstrate that Neuropeptide Y (NPY) ligands, in fact possess significant ability to interact with the human NPFF(2) receptors. NPY Y(1) antagonist BIBP3226 and mixed Y(1) antagonist/Y(4) agonist GR231118 are able to displace with low affinity, 50 -- 100 nM, the specific binding on NPFF receptors expressed in CHO cells as well as in rat dorsal spinal cord, an affinity however superior to those determined against Y(2), Y(4) or Y(5) receptors. Furthermore, BIBP3226 which is unable to inhibit the forskolin-stimulated cyclic AMP production mediated by NPFF(2) receptors, antagonizes the effect of NPFF, revealing the first antagonist of NPFF receptors. These properties of NPY ligands on Neuropeptide FF receptors must be considered when evaluating pharmacological activities of these drugs.

A potent neuropeptide Y antagonist, 1229U91, suppressed spontaneous food intake in Zucker fatty rats.[Pubmed:9612420]

Am J Physiol. 1998 May;274(5):R1500-4.

Neuropeptide Y (NPY) is one of the most potent orexigenic substances known. 1229U91 was found to be a potent and selective NPY antagonist. To elucidate a physiological role of NPY in hyperphagia in obese animals, we studied the effect of 1229U91 on spontaneous food intake in obese and lean Zucker rats. The food intake of Zucker rats was suppressed by intracerebroventricular administration of 1229U91 more potently in obese than in lean animals without abnormal behavior (31.7 and 67.3% inhibition at doses of 10 and 30 micrograms, respectively, in Zucker fatty rats and 22.2% inhibition at 30 micrograms in lean rats). This compound markedly suppressed NPY-induced food intake at 30 micrograms but did not affect galanin-induced food intake, suggesting that the feeding suppression seen in Zucker fatty and lean rats is pharmacologically and behaviorally specific. These results suggest that NPY is involved in feeding behavior in Zucker fatty rats and that NPY contributes to feeding to a greater degree in Zucker fatty than in lean rats. The hyperphagia in Zucker fatty rats may be due to the abnormal overactivation of the NPYergic system.

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.[Pubmed:9669502]

Eur J Pharmacol. 1998 May 15;349(1):97-105.

GR231118, BW1911U90, Bis(31/31')[[Cys31, Trp32, Nva34] neuropeptide Y(31-36)] (T-190) and [Trp-Arg-Nva-Arg-Tyr]2-NH2 (T-241) are peptide analogs of the C-terminus of neuropeptide Y that have recently been shown to be antagonists of the neuropeptide Y Y1 receptor. In this study, the activity of these peptides at each of the cloned neuropeptide Y receptor subtypes is determined in radioligand binding assays and in functional assays (inhibition of forskolin-stimulated cAMP formation). GR231118 is a potent antagonist at the human and rat neuropeptide Y Y1 receptors (pA2 = 10.5 and 10.0, respectively; pKi = 10.2 and 10.4, respectively), a potent agonist at the human neuropeptide Y Y4 receptor (pEC50 = 8.6; pKi = 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 Y Y6 receptor (pKi = 8.8). Therefore, GR231118 is a relatively selective neuropeptide Y Y1 receptor antagonist, but has appreciable activity at the neuropeptide Y Y4 and Y6 receptors as well. BW1911U90, T-190 and T-241 are moderately potent neuropeptide Y Y1 receptor antagonists (pA2 = 7.1, 5.8 and 6.5, respectively; pKi = 8.3, 6.5 and 6.8, respectively) and neuropeptide Y Y4 receptor agonists (pEC50 = 6.8, 6.3 and 6.6, respectively; pKi; 8.3, 7.7 and 8.3, respectively). These data suggest that the C-terminus of neuropeptide Y and related peptides is sufficient for activation of the neuropeptide Y Y4 receptor, but is not sufficient for activation of the neuropeptide Y Y1 receptor. Because BW1911U90, T-190 and T-241 are significantly less potent at the cloned human neuropeptide Y Y1 receptor than at the neuropeptide Y receptor in human erythroleukemia cells, these cells may express a novel neuropeptide Y receptor with high affinity for these peptides.

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