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

Opioid Receptor

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.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-120511
    KNT-127
    Agonist 99.11%
    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-107748
    5'-Guanidinonaltrindole hydrochloride
    Antagonist 98.65%
    5'-Guanidinonaltrindole (5'-GNTI) hydrochloride is a highly selective and potent κ-opioid receptor antagonist with a Ki of 0.18 nM for human κ-opioid receptor.
    5'-Guanidinonaltrindole hydrochloride
  • HY-101416
    Vanilpyruvic acid
    98.28%
    Vanilpyruvic acid is a catecholamine metabolite and precursor to vanillactic acid.
    Vanilpyruvic acid
  • HY-P3445A
    Anrikefon acetate
    Agonist 99.68%
    Anrikefon (HSK21542) acetate is a kappa opioid receptor agonist with analgesic effect.
    Anrikefon acetate
  • HY-101231
    ICI-204448
    98.09%
    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-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 98.92%
    [D-Ala2]leucine-enkephalin, a delta opioid agonist, is a degradation resistant long-acting Leu-enkephalin analog used to study the signaling pathway of delta opioid receptors.
    [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 99.83%
    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-17417R
    Naloxone hydrochloride (Standard)
    Antagonist
    Naloxone (hydrochloride) (Standard) is the analytical standard of Naloxone (hydrochloride). This product is intended for research and analytical applications. Naloxone hydrochloride is an antagonist of Opioid receptor. Naloxone hydrochloride alleviates opioid-overdose-induced respiratory depression. Naloxone hydrochloride may cause pulmonary edema and cardiac arrhythmias.
    Naloxone hydrochloride (Standard)
  • HY-100122
    Bevenopran
    Antagonist 99.09%
    Bevenopran is a peripheral μ-opioid receptor antagonist.
    Bevenopran
  • HY-14157
    ADL-5747
    Agonist 99.82%
    ADL-5747 is a selective and orally active agonist of the δ-opioid receptor (DOR). By binding to the δ-opioid receptors, ADL-5747 activates these receptors, thereby playing a role in pain management pathways. ADL-5747 can be used for research into pain management mechanisms.
    ADL-5747
  • HY-P1866A
    β-Endorphin, equine TFA
    Agonist
    β-Endorphin, equine TFA is an endogenous opioid peptide, which binds at high affinity to both μ/δ opioid receptors. β-Endorphin, equine TFA has analgesic properties.
    β-Endorphin, equine TFA
  • HY-P1742
    Gluten Exorphin B5
    Agonist 98.23%
    Gluten Exorphin B5 is an exogenous opioid peptides derived from wheat gluten, acts on opioid receptor, increases postprandial plasma insulin level in rats.
    Gluten Exorphin B5
  • HY-12392
    Iprindole
    Agonist 99.55%
    Iprindole, an opioid receptor agonist, is a tricyclic antidepressant. Iprindole shortens the immobility time in mice forced swimming test, which can be reversed by the opiate antagonist Naloxone (HY-17417A). Iprindole induces lamellar body formation but devoid of lamellar bodies. Iprindole can be used for the research of depression.
    Iprindole
  • HY-101079
    BRL 52537 hydrochloride
    Agonist 98.14%
    BRL 52537 hydrochloride is a highly selective κ-Opioid receptor (KOR) agonist with Kis of 0.24 nM and 1560 nM for κ and μ subtypes, respectively. BRL 52537 hydrochloride decreases ischemia-evoked NO production as a potential mechanism of neuroprotection. BRL 52537 hydrochloride attenuates early stroke damage.
    BRL 52537 hydrochloride
  • HY-101392A
    Harmane hydrochloride
    Inhibitor 99.88%
    Harmane hydrochloride is a benzodiazepine receptor inhibitor (IC50=7 μM), with IC50 values for mACh, Opioid Receptor, MAO-A/B, and α2-adrenergic receptor of 24 μM, 2.8 μM, 0.5 μM, 5 μM, and 18 μM, respectively. Harmane hydrochloride inhibits the I1 imidazoline receptor (IC50 = 30 nM) to reduce blood pressure and has antidepressant, anti-anxiety, anticonvulsant, and analgesic effects. Harmane hydrochloride inhibits dopamine biosynthesis by decreasing tyrosine hydroxylase (TH) activity and enhancing L-DOPA-induced cytotoxicity in PC12 cells. Additionally, Harmane hydrochloride can increase the mutagenic effect induced by 2-acetylaminofluorene (AAF).
    Harmane hydrochloride
  • HY-100845
    Salvinorin A
    Inhibitor 98.99%
    Salvinorin A is a potent, unique and short-acting high efficacy kappa-opioid receptor (KOPr) agonist with Ki value of 4.3 nm. Salvinorin A is a non-nitrogenous neoclerodane isolated from Salvia divinorum.
    Salvinorin A
  • HY-P1170
    N-terminally acetylated Leu-enkephalin
    Agonist 99.49%
    N-terminally acetylated Leu-enkephalin is the N-terminally acetylated form of Leu-enkephalin. Leu-enkephalin is a five amino acid endogenous peptide that acts as an agonist at opioid receptors.
    N-terminally acetylated Leu-enkephalin
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