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-135238
    (rel)-RSD 921
    Agonist
    (rel)-RSD 921 (PD-117302) is a κ-opioid receptor agonist. (rel)-RSD 921 did not have a greater food-inducing effect in obese than in lean Zucker rats; in both obese and lean Zucker rats, lean rats were more sensitive to its initial food-inducing effect but ultimately ate less.
    (rel)-RSD 921
  • HY-P1320
    [Nphe1]Nociceptin(1-13)NH2
    Antagonist
    [Nphe1]Nociceptin(1-13)NH2, a novel nociceptin/orphanin FQ (NC) endogenous ligand, is a selective and competitive ociceptin receptor antagonist without any residual agonist activity. [Nphe1]nociceptin(1-13)NH2 binds selectively to recombinant nociceptin receptors (pKi=8.4) and antagonizes the inhibitory effects of nociceptin on cyclic AMP accumulation in CHO cells (pA2=6.0). [Nphe1]Nociceptin(1-13)NH2 has the potential to act as an analgesic agent.
    [Nphe1]Nociceptin(1-13)NH2
  • HY-14157A
    ADL-5747 hydrochloride
    Agonist
    ADL-5747 hydrochloride is a selective and orally active agonist of the δ-opioid receptor (DOR). By binding to the δ-opioid receptors, ADL-5747 hydrochloride activates these receptors, thereby playing a role in pain management pathways. ADL-5747 hydrochloride can be used for research into pain management mechanisms.
    ADL-5747 hydrochloride
  • HY-W013353
    (RS)-Salsolinol hydrobromide
    Agonist
    (RS)-Salsolinol hydrobromide is the hydrobromide form of (±)-Salsolinol (HY-113316). (RS)-Salsolinol hydrobromide is a Dopamine (HY-B0451)-derived endogenous metabolite. (RS)-Salsolinol hydrobromide activates μ-opioid receptors (MORs), reduces GABAergic transmission, increases the excitability of dopamine (DA) neurons, and thus accelerates the sustained firing of neurons in the posterior ventral tegmental area (pVTA).
    (RS)-Salsolinol hydrobromide
  • HY-106756
    Spiradoline
    Agonist
    Spiradoline (U-62066), an arylacetamide, is a selective kappa opioid receptor (KOR) agonist with a Ki of 8.6 nM in guinea pig. The Ki values of Spiradoline for μ and δ receptors are 252 nM and 9400 nM, respectively. Spiradoline has potent diuretic, analgesic, antiarrythmic, antitussive, neuroprotective properties and easily penetrates the blood-brain barrier.
    Spiradoline
  • HY-P3087
    Tyr-W-MIF-1
    Modulator
    Tyr-W-MIF-1 is an opioid tetrapeptide with opiate and antiopiate activity. Tyr-W-MIF-1 can induce analgesia.
    Tyr-W-MIF-1
  • HY-170023
    Samidorphan isoquinoline dioxolane
    Samidorphan isoquinoline dioxolane (Compound 16) is a cyclazocine analogue with opioid receptor binding properties.
    Samidorphan isoquinoline dioxolane
  • HY-171758
    BU72
    Agonist
    BU72 is a highly potent and long-acting agonist of μ and κ opioid receptors, and also has a partial agonist effect on δ opioid receptors (EC50 values are 0.054, 0.033, and 0.58 nM, respectively). BU72 has a strong and long-lasting analgesic effect, which is mainly mediated by μ opioid receptors. BU72 has a long-lasting activity and can partially reverse the analgesic effect of morphine. BU72 can be used in the study of opioid dependence.
    BU72
  • HY-130696
    (+)-U-50488
    Agonist
    (+)-U-50488 ((+)-Trans-(1R,2R)-U-50488) is a less active κ opioid receptor (KOR) agonist than the enantiomer of (-)-Trans-(1S,2S)-U-50488 (HY-15997).
    (+)-U-50488
  • HY-P10175
    Acetalin-1
    Antagonist
    Acetalin-1 (Ac-RFMWMK-NH2), a hexapeptide, is a μ opioid receptor antagonist with high affinity for μ and κ3 opioid receptor, weak affinity for κ1 receptors and no affinity for κ2 receptors.
    Acetalin-1
  • HY-15997A
    (+)-U-50488 hydrochloride
    Agonist
    (+)-U-50488 (hydrochloride) (+)-Trans-(1R,2R)-U-50488 hydrochloride) is a less active κ opioid receptor (KOR) agonist than the enantiomer of (-)-Trans-(1S,2S)-U-50488 (HY-15997).
    (+)-U-50488 hydrochloride
  • HY-P1866
    β-Endorphin, equine
    Agonist
    β-Endorphin, equine is an endogenous opioid peptide, which binds at high affinity to both μ/δ opioid receptors. Analgesic properties.
    β-Endorphin, equine
  • HY-P1329
    CTOP
    Agonist
    CTOP is a potent and highly selective μ-opioid receptor antagonist. CTOP antagonizes the acute morphine-induced analgesic effect and hypermotility. CTOP enhances extracellular dopamine levels in the nucleus accumbens. CTOP dose-dependently enhances locomotor activity.
    CTOP
  • HY-P10394
    DP32
    Agonist
    DP32 is a bifunctional compound that contains an opioid receptor (MOP) agonist and a neuropeptide FF receptor (NPFFR) antagonist. DP32 can be used in analgesia-related research.
    DP32
  • HY-134189
    EST73502
    Agonist
    EST73502 is a selective, orally active and blood-brain barrier (BBB) penetrant dual μ-opioid receptor (MOR) agonist and σ1 receptor (σ1R) antagonist, with Kis of 64 nM and 118 nM for MOR and σ1R, respectively. EST73502 has antinociceptive activity.
    EST73502
  • HY-16765
    Axelopran
    Antagonist
    Axelopran (TD-1211) is an opioid receptor antagonist with pKi values of 9.8, 8.8 and 9.9 for human recombinant μ and δ receptors and guinea pig κ receptor, respectively.
    Axelopran
  • HY-170654
    Opioid receptor antagonist 1
    Antagonist
    Opioid receptor antagonist 1 (Compound 10) is an Orvinol (HY-D0168)-based opioid receptor antagonist. Opioid receptor antagonist 1 has antagonistic activity to the analgesic properties of Morphine.
    Opioid receptor antagonist 1
  • HY-133717
    Naltriben
    Antagonist
    Naltriben is a selective δ2-opioid receptor antagonist and TRPM7 activator. Naltriben enhances glioblastoma cell migration and invasion. Naltriben can be used in research into neurological diseases and cancer.
    Naltriben
  • HY-P3870B
    DALDA TFA
    Agonist
    DALDA TFA is a potent and highly selective μ-opioid receptor agonist with a Ki of 1.69 nM. DALDA TFA shows antinociceptive and respiratory effects.
    DALDA TFA
  • HY-B0380S2
    Trimebutine-d3 hydrochloride
    Agonist
    Trimebutine-d3 hydrochloride is deuterium labeled Trimebutine hydrochloride. Trimebutine hydrochloride is a multi-target inhibitor and opioid receptor agonist with antimuscarinic activity. Trimebutine hydrochloride inhibits L-type Ca2+ channels and large-conductance calcium-activated potassium channels (BKCa channels), thereby inhibiting extracellular calcium influx and potassium ion efflux. Trimebutine hydrochloride also targets Toll-like receptors, inhibits Toll-like receptor 2/4/7/8/9 signals, and inhibits LPS-induced IRAK1 activation, as well as ERK1/2, JNK and NF-κB activation, thereby exerting anti-inflammatory effects. Trimebutine hydrochloride also induces tumor cell apoptosis by inhibiting the AKT/ERK pathway. Trimebutine hydrochloride also inhibits excessive contraction of smooth muscle and can be used in the study of gastrointestinal disorders such as irritable bowel syndrome (IBS).
    Trimebutine-d<sub>3</sub> hydrochloride
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