2. Signaling Pathways
  3. GPCR/G Protein
    Neuronal Signaling
  4. Opioid Receptor

Opioid Receptor

Opioid Receptor

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Opioid receptors are a group of G protein-coupled receptors with opioids as ligands. The endogenous opioids are dynorphins, enkephalins, endorphins, endomorphins and nociceptin. Opioid receptors are distributed widely in the brain, and are found in the spinal cord and digestive tract. Opioid receptors are molecules, or sites, within the body that are activated by opioid substances. Opioid receptors inhibit the transmission of impulse in excitatory pathways within the human body system. These pathways include the serotonin, catecholamine, and substance P pathways, which are all implicated in pain perception and feelings of well-being. Opioid receptors are further subclassified into mu, delta, and kappa receptors. All the classes, while exhibiting differing modes of action, share some basic similarities. They all are driven by the potassium pump mechanism, which is found on the plasma membrane of the majority of cells.

Opioid Receptor Isoform Specific Products:

Opioid Receptor Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-101318
    β-Funaltrexamine hydrochloride
    		Antagonist 99.07%
    β-Funaltrexamine (β-FNA) hydrochloride is a selective μ opioid receptor antagonist. β-Funaltrexamine hydrochloride also inhibits cytokine-induced iNOS activation. β-Funaltrexamine hydrochloride inhibits neuroinflammation and ameliorated neuronal degeneration. β-Funaltrexamine hydrochloride has anti-inflammatory and neuroprotective effects and can be used for research of neurodegenerative diseases (eg: stroke)[1][2]
    β-Funaltrexamine hydrochloride
  • HY-139690
    CCG258747
    		Inhibitor 98.96%
    CCG258747 is a selective GRK2 inhibitor (IC50 = 18 nM) with high selectivity over GRK1, GRK5, PKA, and ROCK1 (518, 83, > 5500, and > 550-fold, respectively). CCG258747 also blocks the internalization of the µ-opioid receptor (MOR). CCG258747 attenuates IgE mediated anaphylaxis by inhibiting GRK2 and FcεRI signaling pathway but activates mast cells via MRGPRX2 and MRGPRB2. CCG258747 can be used to study diseases related to overexpression of GRK2 (such as heart failure, opioid tolerance).
    CCG258747
  • HY-B0418AR
    Loperamide hydrochloride (Standard)
    		Agonist
    Loperamide (hydrochloride) (Standard) is the analytical standard of Loperamide (hydrochloride). This product is intended for research and analytical applications. Loperamide (hydrochloride) (R-18553 (hydrochloride)) is an opioid receptor agonist. Loperamide hydrochloride is a selective and competitive human intestinal carboxylesterases (hiCE) inhibitor. Loperamide hydrochloride has anti-diarrheal effect.
    Loperamide hydrochloride (Standard)
  • HY-115066
    GSK1521498 free base
    		Antagonist 99.79%
    GSK1521498 free base is a potent and selective μ-opioid receptor (MOR) antagonist. GSK1521498 free base has the potential for disorders of compulsive consumption of food, alcohol, and agents.
    GSK1521498 free base
  • HY-123689
    Samidorphan
    		Modulator 99.04%
    Samidorphan (ALKS-33) is an orally active opioid system modulator that has a high affinity for binding with μ‐opioid, κ‐opioid, and δ‐opioid receptors. Samidorphan acts as an antagonist at μ‐opioid receptors and acts as a partial agonist at k-opioid and δ‐opioid receptors. Samidorphan primarily acts as an opioid receptor antagonist in vivo. Samidorphan can improve the behavior of depressed animals.
    Samidorphan
  • HY-123689
    Samidorphan
    		Antagonist 99.04%
    Samidorphan (ALKS-33) is an orally active opioid system modulator that has a high affinity for binding with μ‐opioid, κ‐opioid, and δ‐opioid receptors. Samidorphan acts as an antagonist at μ‐opioid receptors and acts as a partial agonist at k-opioid and δ‐opioid receptors. Samidorphan primarily acts as an opioid receptor antagonist in vivo. Samidorphan can improve the behavior of depressed animals.
    Samidorphan
  • HY-104006
    CYM51010
    		Agonist 99.12%
    CYM51010 is a biased ligand of μ-opioid receptor – δ-opioid receptor heterodimers with an EC50 of 403 nM. CYM51010 exhibits anti-nociceptive activity similar to morphine but with a decreased levels of tolerance development and withdrawal symptoms.
    CYM51010
  • HY-120511
    KNT-127
    		Agonist 99.60%
    KNT-127 is a selective and BBB-penetrant δ-opioid receptor (DOR) agonist (Ki = 0.16 nM). KNT-127 is highly selective to the δ receptor, with Ki values of 0.16, 21.3 and 153 nM for δ, μ and κ receptors, respectively. KNT-127 acts as a biased ligand that mainly activates cyclic adenosine monophosphate (cAMP) signaling with lower beta-arrestin signaling activation. KNT-127 increases the release of dopamine and L-glutamate in the striatum, nucleus accumbens, and prefrontal cortex. KNT-127 exhibits antidepressant- and anxiolytic-like effects. KNT-127 can be studied in research on neurological diseases.
    KNT-127
  • HY-101205
    ICI-199441 hydrochloride
    		Agonist 99.30%
    ICI-199441 hydrochloride is a potent and selective κ-opioid receptor agonist with analgesic effects. ICI 199441 hydrochloride can improve heart resistance to ischemia/reperfusion.
    ICI-199441 hydrochloride
  • HY-114072
    J-113397
    		Antagonist 99.00%
    J-113397 is the first potent and selective nonpeptidyl ORL1 receptor antagonist (Ki: cloned human ORL1=1.8 nM) without any agonistic effects on other opioid receptors.
    J-113397
  • HY-101416
    Vanilpyruvic acid
    		98.28%
    Vanilpyruvic acid is a catecholamine metabolite and precursor to vanillactic acid.
    Vanilpyruvic acid
  • HY-128865
    BPR1M97
    		Agonist 99.42%
    BPR1M97 is a dual-acting mu opioid receptor (MOP) and nociceptin-orphanin FQ peptide (NOP) receptor agonist with Ki values of 1.8 and 4.2 nM, respectively. BPR1M97 shows high potency and blood-brain barrier penetration, and produces potent antinociceptive effects.
    BPR1M97
  • HY-90003
    Tianeptine
    		Agonist 99.84%
    Tianeptine is an atypical antidepressant. Tianeptine is a moderate-intensity agonist of the μ-opioid receptor (MOR), and to a lesser extent, is an agonist of the δ-opioid receptor (DOR). Tianeptine is a glutamate modulator that can enhance AMPA receptor and antagonize NMDA receptor. tianeptine increases sensitivity of the α1 adrenergic receptor, which only manifests in chronic treatment. Tianeptine exerts neuroprotective effects under stress/inflammation-induced conditions, exhibiting anti-inflammatory and antioxidant properties. Tianeptine inhibits MMP-9 by suppressing the PI3K/Akt-mediated NF-κB pathway. Tianeptine can be used to alleviate symptoms of depression and anxiety, but does not cause sedative effects.
    Tianeptine
  • HY-101231
    ICI-204448
    		98.68%
    ICI-204448 is a κ-opioid agonist with limited access to the CNS, ICI-204448 can displace the binding of the kappa-opioid ligand 3H-bremazocine from guinea pig cerebellum membranes.
    ICI-204448
  • HY-107384A
    Asimadoline hydrochloride
    		Agonist 99.82%
    Asimadoline (EMD-61753) hydrochloride is an orally active, selective and peripherally active κ-opioid agonist with IC50s of 5.6 nM (guinea pig) and 1.2 nM (human recombinant). Asimadoline hydrochloride has low permeability across the blood brain barrier and has peripheral anti-inflammatory actions. Asimadoline hydrochloride ameliorates allodynia in diabetic rats and has the potential for irritable bowel syndrome (IBS).
    Asimadoline hydrochloride
  • HY-P1299A
    UFP-101 TFA
    		Antagonist 99.36%
    UFP-101 TFA is a potent, selective, and competitive antagonist of the N/OFQ peptide (NOP) receptor, with a pKi of 10.24. UFP-101 TFA displays >3000-fold selectivity over δ, μ and κ opioid receptors. UFP-101 TFA shows antidepressant-like effect.
    UFP-101 TFA
  • HY-P0098
    [D-Ala2]leucine-enkephalin
    		Agonist 98.64%
    [D-Ala2]leucine-enkephalin, a delta opioid agonist, is a degradation resistant long-acting Leu-enkephalin.
    [D-Ala2]leucine-enkephalin
  • HY-107747
    GR 89696
    		Agonist 99.88%
    GR 89696 is a highly selective κ2 opioid receptor agonist with potential to prevent pruritus.
    GR 89696
  • HY-P1302
    Orphanin FQ(1-11)
    		Agonist 99.52%
    Orphanin FQ(1-11), a orphanin FQ or nociceptin (OFQ/N) fragment, is a potent NOP receptor (ORL-1; OP4) agonist, with a Ki of 55 nM. Orphanin FQ(1-11) has no affinity for μ, δ, κ1 and κ3 receptors (Ki>1000 nM). Orphanin FQ(1-11) is analgesic in CD-1 mice.
    Orphanin FQ(1-11)
  • HY-P1337A
    Dynorphin B (1-13) TFA
    		Agonist
    Dynorphin B (1-13) TFA acts as an agonist on opioid κ-receptor.
    Dynorphin B (1-13) TFA
Cat. No. Product Name / Synonyms Application Reactivity
Opioid Receptor Isoform Comparison

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