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

Melatonin Receptor

Melatonin receptors belong to the G protein-coupled receptor superfamily, which preferentially couple to Gαi/o proteins. The melatonin receptor subfamily is composed of three members in mammals: MT1 and MT2, which are both binding to the neurohormone melatonin with high affinity, and GPR50, which shows high sequence homology to MT1 and MT2 but does not bind to melatonin or any other known ligand.

MT1 and MT2 are involved in various biological functions including the regulation of biological rhythms, sleep, pain, retinal, neuronal and immune functions. Alteration of melatonin receptor function or expression in humans is associated with depression, Alzheimer’s disease and type 2 diabetes.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-103005
    Ramelteon metabolite M-II
    Activator 98.24%
    Ramelteon metabolite M-II is the major metabolite of Ramelteon, with IC50s of 208 pM, 1470 pM for human melatonin receptors (MT1 or MT2). Ramelteon is a selective melatonin agonist.
    Ramelteon metabolite M-II
  • HY-B0075S1
    Melatonin-d3
    Activator 99.81%
    Melatonin-d3 is the deuterium labeled Melatonin. Melatonin is a hormone made by the pineal gland that can activates melatonin receptor. Melatonin plays a role in sleep and possesses important antioxidative and anti-inflammatory properties[1][2][3]. Melatonin is a novel selective ATF-6 inhibitor and induces human hepatoma cell apoptosis through COX-2 downregulation[4]. Melatonin attenuates palmitic acid-induced (HY-N0830) mouse granulosa cells apoptosis via endoplasmic reticulum stress[5].
    Melatonin-d<sub>3</sub>
  • HY-17038S1
    Agomelatine-d4
    Agonist
    Agomelatine-d4 is the deuterium labeled Agomelatine. Agomelatine (S-20098) is a specific agonist of MT1 and MT2 receptors with Kis of 0.1, 0.06, 0.12, and 0.27 nM for CHO-hMT1, HEK-hMT1, CHO-hMT2, and HEK-hMT2, respectively[1]. Agomelatine is a selective 5-HT2C receptor antagonist with pKis of 6.4 and 6.2 at native (porcine) and cloned, human 5-HT2C receptors, respectively[2].
    Agomelatine-d<sub>4</sub>
  • HY-147542
    Melatonin receptor agonist 1
    Agonist
    Melatonin receptor agonist 1 (compound 20c) is a potent melatonin receptor (MT) agonist, with Ki values of 108 nM (MT2) and 1140 nM (MT1).
    Melatonin receptor agonist 1
  • HY-B0075S2
    Melatonin-d7
    Activator ≥98.0%
    Melatonin-d7 is the deuterium labeled Melatonin. Melatonin is a hormone made by the pineal gland that can activates melatonin receptor. Melatonin plays a role in sleep and possesses important antioxidative and anti-inflammatory properties[1][2][3]. Melatonin is a novel selective ATF-6 inhibitor and induces human hepatoma cell apoptosis through COX-2 downregulation[4]. Melatonin attenuates palmitic acid-induced (HY-N0830) mouse granulosa cells apoptosis via endoplasmic reticulum stress[5].
    Melatonin-d<sub>7</sub>
  • HY-101303
    5-MCA-NAT
    Agonist
    5-MCA-NAT is a melatonin agonist that may target the melatoninMT3 receptor. 5-MCA-NAT can contract the colonic band in a concentration-dependent manner and reduce intraocular pressure (IOP) in glaucomatous monkey eyes, inhibiting the increase in IOP.
    5-MCA-NAT
  • HY-A0014S
    Ramelteon-d5
    Agonist
    Ramelteon-d5 is deuterium labeled Ramelteon. Ramelteon is a potent, highly selective, and orally active agonist of MT1/MT2 with Ki values of 14 and 112 pM, respectively. Ramelteon has the potential for the research of insomnia. Ramelteon consistently reduces sleep onset after long-term treatment, with no next-morning residual effects or rebound insomnia or withdrawal symptoms upon discontinuation[1][2].
    Ramelteon-d<sub>5</sub>
  • HY-133112
    7-Desmethyl-3-hydroxyagomelatine
    Agonist
    7-Desmethyl-3-hydroxyagomelatine (3-Hydroxy-7-desmethyl agomelatine), a metabolite of Agomelatine, has less activity than Agomelatine. Agomelatine is a melatonergic (MT1 and MT2) agonist and serotonergic (5HT2C) antagonist.
    7-Desmethyl-3-hydroxyagomelatine
  • HY-17038S2
    Agomelatin-d3
    Agonist ≥98.0%
    Agomelatin-d3 is the deuterium labeled Agomelatine. Agomelatine (S-20098) is a specific agonist of MT1 and MT2 receptors with Kis of 0.1, 0.06, 0.12, and 0.27 nM for CHO-hMT1, HEK-hMT1, CHO-hMT2, and HEK-hMT2, respectively[1]. Agomelatine is a selective 5-HT2C receptor antagonist with pKis of 6.4 and 6.2 at native (porcine) and cloned, human 5-HT2C receptors, respectively[2].
    Agomelatin-d<sub>3</sub>
  • HY-151951
    Antidepressant agent 4
    Antidepressant agent 4 is an orally active antidepressant agent. Antidepressant agent 4 exhibits antidepressant, anxiolytic, performance enhancing and nootropic activities.
    Antidepressant agent 4
  • HY-106136
    TIK-301
    Agonist
    TIK-301 (PD-6735) is a chlorinated melatonin derivative and a potent, high-affinity and orally active melatonin MT1 and MT2 receptors agonist with Kis of 0.081 nM and 0.042 nM, respectively. TIK-301 is also a 5-HT2B/5-HT2C receptors antagonist with antidepressant action. TIK-301 has the potential for sleep disorders and other circadian rhythm disorders treatment.
    TIK-301
  • HY-107628
    DH97
    Antagonist
    DH97 is a potent and selective antagonist of MT2 melatonin receptor, with a pKi of 8.03 for human MT2. DH97 shows 89- and 229-fold selectivity for human MT2 over human mt1 and Xenopus mel1c receptor subtypes. DH97 can inhibit melatonin-induced enhancement of electrically-evoked responses.
    DH97
  • HY-A0014S1
    Ramelteon-d3
    ≥99.0%
    Ramelteon-d3 is a deuterium-labelled Ramelteon (HY-A0014).
    Ramelteon-d<sub>3</sub>
  • HY-100940
    6-Chloromelatonin
    Agonist
    6-Chloromelatonin is a potent melatonin receptor agonist with greater metabolic stability than melatonin. 6-Chloromelatonin compete for [3H]-melatonin and 2-[125I]-iodomelatonin binding to MT1 receptors (pKi=8.9 and 9.1, respectively). 6-Chloromelatonin compete for [3H]-melatonin binding to MT2 receptors (pKi=9.77).
    6-Chloromelatonin
  • HY-151950
    Antidepressant agent 3
    Antidepressant agent 3 is an orally active antidepressant agent. Antidepressant agent 3 exhibits antidepressant, anxiolytic, performance enhancing and nootropic activities.
    Antidepressant agent 3
  • HY-116046
    GR 196429
    Agonist
    GR 196429 is a melatonin receptor agonist with some selectivity for the MT1 subtype. GR 196429 produces both sleep-promoting effects and alterations of circadian rhythm, as well as stimulating melatonin release in mice.
    GR 196429
  • HY-A0014R
    Ramelteon (Standard)
    Agonist
    Ramelteon (Standard) is the analytical standard of Ramelteon. This product is intended for research and analytical applications. Ramelteon is a potent, highly selective, and orally active agonist of MT1/MT2 with Ki values of 14 and 112 pM, respectively. Ramelteon has the potential for the research of insomnia. Ramelteon consistently reduces sleep onset after long-term treatment, with no next-morning residual effects or rebound insomnia or withdrawal symptoms upon discontinuation.
    Ramelteon (Standard)
  • HY-17038B
    Agomelatine (L(+)-Tartaric acid)
    Agonist 99.82%
    Agomelatine L(+)-Tartaric acid (S-20098 L(+)-Tartaric acid) is a specific agonist of MT1 and MT2 receptors with Kis of 0.1, 0.06, 0.12, and 0.27 nM for CHO-hMT1, HEK-hMT1, CHO-hMT2, and HEK-hMT2, respectively. Agomelatine L(+)-Tartaric acid is a selective 5-HT2C receptor antagonist with pKis of 6.4 and 6.2 at native (porcine) and cloned, human 5-HT2C receptors, respectively.
    Agomelatine (L(+)-Tartaric acid)
  • HY-14803S
    Tasimelteon-d5
    Agonist
    Tasimelteon-d5 is the deuterium labeled Tasimelteon. Tasimelteon (BMS-214778) is an orally active and selective dual melatonin receptor agonist (DMRA). Tasimelteon has 2.1-4.4 times greater affinity for the MT2 receptor than for the MT1 receptor. Tasimelteon is a circadian regulator and has the potential for Non-24-Hour Sleep-Wake Disorder (Non-24)[1][2].
    Tasimelteon-d<sub>5</sub>
  • HY-17038R
    Agomelatine (Standard)
    Agonist
    Agomelatine (Standard) is the analytical standard of Agomelatine. This product is intended for research and analytical applications. Agomelatine (S-20098) is a specific agonist of MT1 and MT2 receptors with Kis of 0.1, 0.06, 0.12, and 0.27 nM for CHO-hMT1, HEK-hMT1, CHO-hMT2, and HEK-hMT2, respectively. Agomelatine is a selective 5-HT2C receptor antagonist with pKis of 6.4 and 6.2 at native (porcine) and cloned, human 5-HT2C receptors, respectively.
    Agomelatine (Standard)

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