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[Nphe1]Nociceptin(1-13)NH2

[Nphe1]Nociceptin(1-13)NH2

Catalog No. BCC5739
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1mg $347.00 Ship Within 7 Days
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Quality Control of [Nphe1]Nociceptin(1-13)NH2

Chemical structure

[Nphe1]Nociceptin(1-13)NH2

Biological Activity of [Nphe1]Nociceptin(1-13)NH2

Selective and competitive nociceptin receptor antagonist, devoid of any agonist activity. Binds selectively to recombinant nociceptin receptors (pKi = 8.4), and competitively antagonizes the actions of nociceptin in vitro and in vivo.

[Nphe1]Nociceptin(1-13)NH2 Dilution Calculator

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Chemical Properties of [Nphe1]Nociceptin(1-13)NH2

Cas No. 267234-08-2 SDF Download SDF
Sequence GGGFTGARKSARK

(Modifications: Gly-1 = N-Bn-Gly, Lys-13 = C-terminal amide)

Chemical Name (2S)-6-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-2-[[(2S)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[2-[[2-[[2-(benzylamino)acetyl]amino]acetyl]amino]acetyl]amino]-3-phenylpropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]propanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]hexanoyl]amino]-3-hydroxypropanoyl]amino]propanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]hexanamide
SMILES CC(C(C(=O)NCC(=O)NC(C)C(=O)NC(CCCN=C(N)N)C(=O)NC(CCCCN)C(=O)NC(CO)C(=O)NC(C)C(=O)NC(CCCN=C(N)N)C(=O)NC(CCCCN)C(=O)N)NC(=O)C(CC1=CC=CC=C1)NC(=O)CNC(=O)CNC(=O)CNCC2=CC=CC=C2)O
Standard InChIKey NMBZIPCESQREMT-UVDGFCMYSA-N
Standard InChI InChI=1S/C61H100N22O15/c1-35(75-48(88)33-74-59(98)50(37(3)85)83-57(96)44(28-38-16-6-4-7-17-38)77-49(89)32-73-47(87)31-72-46(86)30-69-29-39-18-8-5-9-19-39)52(91)79-43(23-15-27-71-61(67)68)55(94)81-41(21-11-13-25-63)56(95)82-45(34-84)58(97)76-36(2)53(92)80-42(22-14-26-70-60(65)66)54(93)78-40(51(64)90)20-10-12-24-62/h4-9,16-19,35-37,40-45,50,69,84-85H,10-15,20-34,62-63H2,1-3H3,(H2,64,90)(H,72,86)(H,73,87)(H,74,98)(H,75,88)(H,76,97)(H,77,89)(H,78,93)(H,79,91)(H,80,92)(H,81,94)(H,82,95)(H,83,96)(H4,65,66,70)(H4,67,68,71)/t35-,36-,37+,40-,41-,42-,43-,44-,45-,50-/m0/s1
Formula C61H100N22O15 M.Wt 1381.6
Solubility Soluble to 1 mg/ml in 10% acetonitrile
Storage Desiccate at -20°C
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.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other courier with RT , or blue ice upon request.

Preparing Stock Solutions of [Nphe1]Nociceptin(1-13)NH2

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 0.7238 mL 3.619 mL 7.238 mL 14.476 mL 18.095 mL
5 mM 0.1448 mL 0.7238 mL 1.4476 mL 2.8952 mL 3.619 mL
10 mM 0.0724 mL 0.3619 mL 0.7238 mL 1.4476 mL 1.8095 mL
50 mM 0.0145 mL 0.0724 mL 0.1448 mL 0.2895 mL 0.3619 mL
100 mM 0.0072 mL 0.0362 mL 0.0724 mL 0.1448 mL 0.1809 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

References on [Nphe1]Nociceptin(1-13)NH2

Effects of [Nphe1]nociceptin(1-13)NH2, [Phe1(CH2-NH)Gly2]nociceptin(1- 13)NH2, and nocistatin on nociceptin inhibited constrictions of guinea pig isolated bronchus.[Pubmed: 16472082]


Electric field stimulation (EFS) causes excitatory non adrenergic-non cholinergic (eNANC) and cholinergic constrictions in the guinea pig isolated bronchus, the activation of eNANC and cholinergic nerves respectively. We investigated the effects of [Nphe1]nociceptin(1-13)NH2 ([Nphe1]NC(1-13)NH2), [Phe1(CH2-NH)Gly2]nociceptin(1- 13)NH2 ([F/G] NC(1-13)NH2), and nocistatin (NST) on nociceptin (NC) inhibited constrictions in isolated bronchus of guinea pig. The results show that NC (1 micromol/L) inhibited EFS-induced eNANC and cholinergic constrictions compared with the control, in which nociceptin was not applied. After pretreatment with [Nphe1]NC(1-13)NH2, [F/G]NC(1-13)NH2, or NST, the inhibitions of NC were antagonized by [Nphe1]NC(1-13)NH2 and [F/G]NC(1-13)NH2 but not NST. However, [Nphe1]NC(1-13)NH2, [F/G]NC(1-13)NH2, and NST did not affect the inhibitions induced by morphine. Furthermore, [Nphe1]NC(1-13)NH2, [F/G]NC(1-13)NH2 and NST did not cause any appreciable effects on EFS-induced eNANC and cholinergic constrictions in guinea pig bronchi. The results demonstrate that [Nphe1]NC(1-13)NH2 and [F/G]NC(1- 13)NH2 but not NST act as selective antagonists of the NC receptor and the effects of NC on EFS-induced constrictions of guinea pig isolated bronchus.

Sodium ions and GTP decrease the potency of [Nphe1]N/OFQ(1-13)NH2 in blocking nociceptin/orphanin FQ receptors coupled to cyclic AMP in N1E-115 neuroblastoma cells and rat olfactory bulb.[Pubmed: 12697273]


The pseudopeptide [Nphe(1)]N/OFQ(1-13)NH(2) (Nphe) has been shown to act as a pure, selective and competitive antagonist of nociceptin/orphanin FQ (N/OFQ) receptors in different tissues. However, Nphe displayed a highly variable potency, with pA(2) values ranging from 5.96 to 8.45. In the present study, we show that sodium ions and GTP markedly affect the potency of Nphe in blocking N/OFQ receptors coupled to cyclic AMP inhibition in different cellular systems. In intact N1E-115 neuroblastoma cells, the pA(2) value of Nphe increased from 7.13 to 8.02 when the extracellular sodium concentration was reduced from 138 to 2.5 mM. When N/OFQ inhibition of adenylyl cyclase activity was assayed in cell membranes, 100 mM NaCl decreased the pK(i) value of Nphe from 8.38 to 7.32, but increased that of the nonpeptide N/OFQ receptor antagonist CompB from 8.61 to 8.92. Similar effects of sodium ions on the potencies of Nphe and CompB were observed when the compounds were used to antagonize the N/OFQ inhibition of adenylyl cyclase activity in membranes of the external plexiform layer of the rat olfactory bulb. In the same assay, the increase of GTP concentration from 0.1 to 200 micro M decreased Nphe potency by 8-fold. These data demonstrate that sodium ions and GTP affect the potency of Nphe in a manner similar to that of agonists but not of pure antagonists and suggest that these factors may contribute to the reported variability of Nphe affinity constant.

[Nphe1]nociceptin(1-13)-NH2 antagonizes nociceptin-induced hypotension, bradycardia, and hindquarters vasodilation in the anesthetized rat.[Pubmed: 11911223]


The purpose of this study was to investigate the effects of [Nphe1]nociceptin(1-13)-NH2 on nociceptin-induced decreases in mean arterial pressure (MAP), heart rate (HR), and hindquarters vascular bed resistance (HVBR) of the anesthetized rat. The results showed that i.c.v. or i.v. [Nphe1]nociceptin(1-13)-NH2 (1.5-12 nmol/kg and 5-120 nmol/kg, respectively) could antagonize the depressor effects of i.c.v. or i.v. nociceptin (3 and 30 nmol/kg, respectively) on MAP and HR. Furthermore, [Nphe1]nociceptin(1-13)-NH2 (5-120 nmol/kg) could reverse nociceptin (30 nmol/kg)-induced decrease of HVBR. However, [Nphe1]nociceptin(1-13)-NH2 had no significant effects on similar effects induced by morphine. Our results suggest that [Nphe1]nociceptin(1-13)-NH2 acts as a selective antagonist of the nociceptin receptor in the cardiovascular system of the rat.

Intrathecal [Nphe1]nociceptin( 1-13)NH2 selectively reduces the spinal inhibitory effect of nociceptin.[Pubmed: 11848299]


The effects of intrathecal (i.t.) application of the proposed nociceptin receptor antagonist [Nphe1]nociceptin(1-13)NH2 on the flexor reflex was evaluated in spinalized rats. I.t. [Nphe1]nociceptin (1-13)NH2 dose-dependently facilitated the flexor reflex with no depression. Pretreatment with 16.5 nmol of [Nphe1]nociceptin(1-13)NH2 prevented the development of reflex depression following 0.55 nmol i.t. nociceptin, but strongly enhance the initial excitatory effect of nociceptin. The reflex depressive effect of i.t. endomorphine-2 was not blocked by [Nphe1]nociceptin(1-13)NH2 pretreatment. It is concluded that [Nphe1]nociceptin(1-13)NH2 is a selective antagonist of the spinal receptor mediating the inhibitory action of nociceptin. It can be further suggested that the spinal inhibitory effect of nociceptin may be tonically active.

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[Nphe1]Nociceptin(1-13)NH2,267234-08-2,GPCR/G protein,NOP Receptor, supplier, inhibitor,Antagonist,Blocker,Modulator,Agonist, activators, activates, potent, BioCrick

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