MDL 105519 is a potent and selective antagonist of glycine binding to the NMDA receptor.
GNE-9278 is a highly selective positive allosteric modulator of NMDAR that acts at the GluN1 transmembrane domain (TMD). GNE-9278 acts on activated NMDARs to increase peak current and agonist affinity[1].
UBP710 is a selective NMDA receptor modulator. UBP710 displays greater activity in potentiating GluN2B-containing receptors than those containing GluN2A[1].
UBP310 is a selective GluR5 antagonist, with a Kd of 130 nM[1].
Gavestinel (GV 150526) is a selective and potent the glycine site of the NMDA receptor antagonist. Gavestinel has neuroprotectant effects[1].
L-689560 is a potent N-methyl-D-aspartate (NMDA) receptor antagonist at the GluN1 glycine binding site. L-689560 is widely used as a radiolabeled ligand in binding studies and used for study the roles of NMDA receptors in normal neurological processes as well as in diseases[1][2].
N20C hydrochloride is a selective and noncompetitive open NMDA receptor open channel blocker, with micromolar affinity, fast on-off blockade kinetics, and strong voltage dependence. Neuroprotective activity[1].
Flupirtine(D 9998) is a selective neuronal potassium channel opener that also has NMDA receptor antagonist properties.IC50 Value: Target: Potassium channel; NMDA receptorin vitro: High concentrations of flupirtine antagonized inward currents to NMDA(200 microM) at -70 mV with an lC50 against steady-state responses of 182.1+/-12.1 microM. The effects of flupirtine were voltage-independent and not associated with receptor desensitization making actions within the NMDA receptor channel or at the glycine modulatory site unlikely. NMDA receptor antagonism probably has little relevance for the clinical efficacy of flupirtine as the concentrations needed were far higher than those achieved in clinical practice. However, the activation of a G-protein-regulated inwardly rectifying K+ channel was identified as an interesting molecular target site of flupirtine. In the next stage, the central nervous spectrum of action of experimental K+ channel openers (PCO) was considered. As far as they have been studied, experimental K+ channel openers display a spectrum of action comparable to that of flupirtine [1]. Therapeutic flupirtine concentrations (≤10 ?M) did not affect voltage-gated Na(+) or Ca(2+) channels, inward rectifier K(+) channels, nicotinic acetylcholine receptors, glycine or ionotropic glutamate receptors. Flupirtine shifted the gating of K(V)7 K(+) channels to more negative potentials and the gating of GABA(A) receptors to lower GABA concentrations [2]. Cell exposure to flupirtine decreased the amplitude of delayed rectifier K(+) current (I(K(DR))) with a concomitant raise in current inactivation in NSC-34 neuronal cells [4].in vivo: Rats were trained to discriminate the novel analgesic flupirtine (10.0 mg/kg i.p., 10 min) from no drug under a two-choice fixed-ratio 5 shock-termination schedule. Flupirtine yielded a dose-response curve with an ED50 of 3.87 mg/kg. The opioid analgesics pentazocine, codeine and tramadol failed to produce flupirtine appropriate responding. The opioid antagonist naltrexone did not antagonize the discriminative effects of flupirtine [3]. Both morphine (ED?? =?0.74?mg/kg) and flupirtine (ED???=?3.32?mg/kg) caused dose-related anti-hyperalgesia at doses that did not cause sedation [5]. Toxicity: Based on study-end data, hepatotoxicity was detected in 31% of patients receiving flupirtine for ≥ 6 weeks [6].
Unifiram (DM232) is acts as a potent cognition enhancer through the activation of the AMPA-mediated neurotransmission system. Unifiram (DM232) has the potential for amnesia prevention and neurodegenerative disorder research[1][2].
Traxoprodil (CP101,606) is a potent and selective NMDA antagonist and protect hippocampal neurons with an IC50 of 10 nM.
IEM-1754, a dicationic adamantane derivative, is a potent blocker of open channels of native ionotropic glutamate receptors including quisqualate-sensitive receptors in insect muscles, NMDAR in cultured rat cortical neurons, and AMPAR in freshly isolated hippocampal cells. IEM-1754 shows anticonvulsant potency in vivo[1][2].
LY 235959 is a competitive N-methyl-D-aspartate (NMDA)-receptor antagonist. LY 235959 potentiates the anticonvulsant action of antiepileptics[1].
Tat-NR2BAA is the control peptide of Tat-NR2B9c (HY-P0117), inactive. The sequence of Tat-NR2BAA is similar to Tat-NR2B9c, but it has a double-point mutation in the COOH terminal tSXV motif, making it incapable of binding PSD-95. Tat-NR2B9c is a membrane-permeant peptide and disrupts PSD-95/NMDAR binding, correlate with uncoupling NR2B- and/or NR2A-type NMDARs from PSD-95[1][2].
SDZ 220-581 ammonium salt is a potent, competitive antagonist at the NMDA glutamate receptor subtype(pKi= 7.7). IC50 Value: Target: NMDA receptorin vitro: Wake-promoting doses of LSN2463359 and LSN2814617 attenuated deficits in performance induced by the competitiveNMDA receptor antagonist SDZ 220,581 in two tests of operant behaviour: the variable interval 30 s task and the DMTP task [1].in vivo: Administration of SDZ 220-581 or CGS 19755 was associated with a robust reduction in PPI, whereas L-701,324, 4-Cl-KYN or MLA failed to alter PPI [2]. With the most active agent, SDZ 220-581, full protection against maximal electroshock seizures (MES) was obtained at oral doses of 10 mg/kg in rats and in mice. The compound had a fast onset (< or = 1 hr) and a long duration (> or = 24 hr) of action [3]. Rats were pretreated with clozapine (0 or 5.0 mg/kg) or haloperidol (0 or 0.1 mg/kg), together with SDZ 220-581 (0 or 2.5 mg/kg), and tested. SDZ 220-581 and SDZ EAB-515 decreased PPI without affecting startle magnitude [4].
LY 274614 is an orally active, competitive NMDA receptor antagonist. LY 274614 can be used for Neurological Disease study[1].
Kynurenic acid, an endogenous tryptophan metabolite, is a broad-spectrum antagonist targeting NMDA, glutamate, α7 nicotinic acetylcholine receptor. Kynurenic acid is also a selective ligand of the GPR35 receptor.
SDZ 220-581 Hcl is a potent, competitive antagonist at the NMDA glutamate receptor subtype(pKi= 7.7).IC50 Value: Target: NMDA receptorin vitro: Wake-promoting doses of LSN2463359 and LSN2814617 attenuated deficits in performance induced by the competitiveNMDA receptor antagonist SDZ 220,581 in two tests of operant behaviour: the variable interval 30 s task and the DMTP task [1].in vivo: Administration of SDZ 220-581 or CGS 19755 was associated with a robust reduction in PPI, whereas L-701,324, 4-Cl-KYN or MLA failed to alter PPI [2]. With the most active agent, SDZ 220-581, full protection against maximal electroshock seizures (MES) was obtained at oral doses of 10 mg/kg in rats and in mice. The compound had a fast onset (< or = 1 hr) and a long duration (> or = 24 hr) of action [3]. Rats were pretreated with clozapine (0 or 5.0 mg/kg) or haloperidol (0 or 0.1 mg/kg), together with SDZ 220-581 (0 or 2.5 mg/kg), and tested. SDZ 220-581 and SDZ EAB-515 decreased PPI without affecting startle magnitude [4].
(S)-(-)-5-Fluorowillardiine is a potent and specific AMPAR agonist.
SYM 2081 is a high-affinity ligand and potent, selective agonist of kainate receptors, inhibits [3H]-kainate binding with an IC50 of 35 nM, almost 3000- and 200-fold selectivity for kainate receptors over AMPA and NMDA receptors respectively[1].
Oleoyl-D-lysine is a selective Glycine Transporter-2 (GlyT2) inhibitor based on lipid. Oleoyl-D-lysine reverses neuropathic pain in mice, shows antidrowsiness effect on chronic neuropathic pain. Oleoyl-D-lysine is safe and effective without respiratory depression[1].
Farampator (CX-691;Org24448) is an AMPA receptor positive modulator.
N-Methyl-DL-aspartic acid is a glutamate analogue and acts as a potent neuronal excitant. N-Methyl-DL-aspartic acid is a NMDA receptor agonist and can be used for neurological diseases research[1][2].
NMDA-IN-2 (compound 6b), a Procaine derivative, is a NMDA receptor 2B subtype inhibitor[1].
BZAD-01 is a potent, selective and orally active inhibitor of NMDA NR2B subunit, with a Ki of 72 nM. BZAD-01 can improve postural asymmetry as well as Apomorphine-induced rotation[1].
Risevistinel (NYX-783) is a positive allosteric modulator of N-methyl-D-aspartate (NMDA) receptor. Nevadistinel can be used to inhibit cognitive impairment associated with neurodegenerative diseases, such as mild cognitive impairment, mild Alzheimer's disease, Parkinson's disease, Lewy body disease[1].
threo Ifenprodil hemitartrate is a σ receptor agonist, with Kis of 59.1 and 2 nM for σ1 and σ2 receptors, respectively. threo Ifenprodil hemitartrate is also a NR2B subunit-selective NMDA receptor antagonist (IC50=0.22 μM). threo Ifenprodil hemitartrate is a hERG potassium channel inhibitor, with an IC 50 of 88 nM, showing antiarrhythmic activity[1][2][3].
Memantine-d6 hydrochloride is the deuterium labeled Memantine hydrochloride. Memantine (hydrochloride) (D-145 (hydrochloride)) is a moderate affinity, uncompetitive NMDA receptor antagonist, inhibit CYP2B6 and CYP2D6 with Ki of 0.51 nM and 94.9 μM, respectively[1].
NPEC- caged-(S)-AMPA, a caged neurotransmitter analog, is a NPEC photoprotecting group caged the (S)-AMPA (HY-100815A) to make caged ligands specific for glutamate receptor sub-types. NPEC- caged-(S)-AMPA selectively activates AMPA receptor[1].
L-Glutamic acid-5-13C is the 13C-labeled L-Glutamic acid. L-Glutamic acid acts as an excitatory transmitter and an agonist at all subtypes of glutamate receptors (metabotropic, kainate, NMDA, and AMPA). L-Glutamic acid shows a direct activating effect on the release of DA from dopaminergic terminals.
Arcaine (sulfate) is a glutamate NMDA receptor inhibitor[1].