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.
7-Desmethyl-3-hydroxyagomelatine (3-Hydroxy-7-desmethyl agomelatine), a metabolite of Agomelatine, has less activity than Agomelatine[1]. Agomelatine is a melatonergic (MT1 and MT2) agonist and serotonergic (5HT2C) antagonist[1][2].
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[1][2][3].
Melatonin D5 is deuterium labeled Melatonin. Melatonin is a hormone made by the pineal gland that can activates melatonin receptor. Antioxidative and anti-inflammatory properties[1][2][3]. Melatonin is a selective ATF-6 inhibitor and induces human hepatoma cell apoptosis through COX-2 downregulation[4].
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[1][2].
Luzindole (N-0774) is a selective melatonin receptor antagonist. Luzindole preferentially targets MT2 (Mel1b) over MT1 (Mel1a) with Ki values of 10.2 and 158 nM for human MT2 and MT1, respectively. Luzindole suppresses experimental autoimmune encephalomyelitis (EAE), and exerts antidepressant-like activity[1][2][3].
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].
GR 128107 is an antagonist of melatonin receptor.
Melatonin receptor agonist 1 (compound 20c) is a potent melatonin receptor (MT) agonist, with Ki values of 108 nM (MT2) and 1140 nM (MT1)[1].
Piromelatine (Neu-P11) is a melatonin MT1/MT2 receptor agonist, serotonin 5-HT1A/5-HT1D agonist, and serotonin 5-HT2B antagonist. Piromelatine (Neu-P11) possesses sleep promoting, analgesic, anti-neurodegenerative, anxiolytic and antidepressant potentials. Piromelatine (Neu-P11) also possesses pain-related P2X3, TRPV1, and Nav1.7 channel-inhibition capacities[1][2][3].
S26131 (compound 5) is a potent and selective MT1 melatoninergic ligand, and the Ki values are 0.5 and 112 nM for MT1 and MT2, respectively. S26131 behaves as an MT1 and MT2 antagonist[1].
S-22153 is a potent melatonin receptor antagonist with EC50 values of 19 nM, 4.6 nM for hMT1 and hMT2 melatonin receptor, respectively. S-22153 has Ki values of 8.6 nM (CHO cells) and 16.3 nM (HEK cells) for hMT1, and 6.0 nM (CHO cells) and 8.2 nM (HEK cells) for hMT2. S-22153 is a specific ligand of MT1 and MT2 melatonin receptors subtypes[1][2].
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.
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.
Ramelteon is a highly potent and selective melatonin receptor agonist with Ki values of 14 and 112 pM for human melatonin1 and melatonin2.
Agomelatine D6 (S-20098 D6) is deuterium labeled Agomelatine. Agomelatine is a specific agonist of MT1 and MT2 receptors[1] .
2-Iodomelatonin is a potent agonist of melatonin receptor 1 (MT1) with a Ki value of 28 pM, it is more 5-fold selective for MT1 over MT2[1]. 2-iodomelatonin can be used to identify, characterize and localize melatonin binding sites in the brain and peripheral tissues[1].
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)[1][2].
UCM 608 is a high affinity melatonin (MT) membrane receptor agonist. The pKi values for MT1 and MT2 are 10.7 and 10.4[1][2].
8-M-PDOT (AH-002) is a selective melatonin MT2 receptor agonist. 8-M-PDOT is 5.2-fold selective for MT2 over MT1 receptors. 8-M-PDOT binds human recombinant MT2 and MT2 receptors with pKi values of 8.23 and 8.95 respectively. 8-M-PDOT has anxiolytic-like activity[1][2].
Tasimelteon is a melatonin MT1 and MT2 receptor agonist.Target: melatonin receptorTasimelteon is a novel circadian regulator, is the first product for the treatment of Non-24-hour Sleep-Wake Disorder (Non-24) approved by either the FDA or the European Medicines Agency (EMA). Tasimelteon is a potent and specific melatonin (MT1 and MT2) receptor agonist with 2 - 4 times greater affinity for the MT2 receptor.
4-P-PDOT is a potent, selective and affinity Melatonin receptor (MT2) antagonist. 4-P-PDOT is >300-fold more selective for MT2 than MT1. 4-P-PDOT significantly counteracts Melatonin-mediated antioxidant effects (GSH/GSSG ratio, phospho-ERK, Nrf2 nuclear translocation, Nrf2 DNA-binding activity)[1][2][3][4].