1. GPCR/G Protein
    Neuronal Signaling
  2. Opioid Receptor
  3. Nociceptin

Nociceptin (Synonyms: Orphanin FQ)

Cat. No.: HY-P0183 Purity: 99.79%
Handling Instructions

Nociceptin, a heptadecapeptide, is the endogenous ligand of the nociceptin receptor, acting as a potent anti-analgesic.

For research use only. We do not sell to patients.

Custom Peptide Synthesis

Nociceptin Chemical Structure

Nociceptin Chemical Structure

CAS No. : 170713-75-4

Size Price Stock Quantity
10 mM * 1 mL in Water USD 1051 In-stock
Estimated Time of Arrival: December 31
1 mg USD 84 In-stock
Estimated Time of Arrival: December 31
5 mg USD 336 In-stock
Estimated Time of Arrival: December 31
10 mg USD 612 In-stock
Estimated Time of Arrival: December 31
25 mg USD 1320 In-stock
Estimated Time of Arrival: December 31
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Customer Review

Based on 1 publication(s) in Google Scholar

Top Publications Citing Use of Products
  • Biological Activity

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  • Customer Review


Nociceptin, a heptadecapeptide, is the endogenous ligand of the nociceptin receptor, acting as a potent anti-analgesic.

In Vitro

Nociceptin (1 μg/mL) significantly prevents LPS (10 ng/mL)-stimulated cell migration whereas it is ineffective when added alone. Nociceptin (1 nM-10 μM) elicits a concentration-dependent blockade of LPS-mediated cell migration, with a maximal effect at 1 and 10 μM. Nociceptin counteracts LPS-induced elevation of IL-1β mRNA levels. Nociceptin (1 μM) and NNC 55-0396 induce apoptotic cell death in U87 cells. Nociceptin (1 μM) counteracts LPS-induced [Ca2+]i increase in U87 cells via β-arrestin 2. Nociceptin counteracts the LPS-induced phosphorylation of PKC and ERK in U87 cells. Nociceptin inhibits the LPS-mediated transcriptional activation of NF-kB and AP-1 reporter genes[1].

Molecular Weight








Sequence Shortening



Room temperature in continental US; may vary elsewhere.

Powder -80°C 2 years
  -20°C 1 year
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

H2O : ≥ 50 mg/mL (27.64 mM)

*"≥" means soluble, but saturation unknown.

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 0.5528 mL 2.7639 mL 5.5278 mL
5 mM 0.1106 mL 0.5528 mL 1.1056 mL
10 mM 0.0553 mL 0.2764 mL 0.5528 mL
*Please refer to the solubility information to select the appropriate solvent.
Cell Assay

Cell proliferation assay is carried out in the assay. U87 cells are plated on 12-well plate and treated for 24 h maintained in cell culture medium containing 10% fetal bovine serum. Five hours before the end of the treatments, [methyl-3H] Thymidine (50 nM final concentration) is added to serum-free cell culture medium and the plate is incubated at 37°C. Thereafter, medium is removed and cells are washed twice with PBS. 200 μL of PBS is added to each well, the cells are scraped off and centrifuged at 13,000g for 3 min at 4°C; supernatants are then discarded, pellets resuspended in 500 μL of cold trichloroacetic acid (10% w/v), incubated on ice for 20 min and centrifuged at 13,000g for 3 min at 4°C. The obtained supernatant is then discarded, pellet suspended in 500 μL of cold methanol and centrifuged at 3 min for 13,000g at 4°C. After that, the pellet is suspended in 200 μL of NaOH 1 N and heated at 55°C for 10 min. Samples are then neutralized with 200 μL of HCl 1 N and 350 μL of the labeled DNA incubated in counting vials with 4 mL of Filter Count scintillation liquid. Vials are vortexed and incubated overnight at room temperature and the radioactivity is determined by liquid scintillation spectrometry.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

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NociceptinOrphanin FQOpioid ReceptorInhibitorinhibitorinhibit

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