BMS-986163 is a negative allosteric modulator of GluN2B. The prodrug BMS-986163 rapidly converts to its active parent molecule BMS-986169 (Ki=4 nM, IC50=24 nM).
Conantokin R (Con-R) is an NMDA receptor peptide antagonist with an IC50 of 93 nM. Conantokin R binds Zn2+ and Mg2+ with Kds of 0.15 μM and 6.5 μM, respectively. Conantokin R shows anticonvulsant activity[1][2].
NMDA receptor potentiator-1 (Compound 1368) is a subunit selective NMDA receptor potentiator with IC50s of 4 μM and 5 μM against NR2C and NR2D expression, respectively[1].
SDZ 220-040 is a competitive the mammalian NMDA receptor antagonist[1].
GYKI 52466 hydrochloride is an orally active, highly selective and noncompetitive AMPA/kainate receptor antagonist with the IC50 values of 7.5 and 11μM, respectively. GYKI 52466 hydrochloride has good blood brain barrier permeability and anticonvulsant effect. GYKI 52466 hydrochloride can be used in Parkinson's disease research[1][2].
Rislenemdaz (CERC-301) is an orally bioavailable and selective N-methyl-D-aspartate (NMDA) receptor subunit 2B (GluN2B) antagonist with Ki and IC 50 of 8.1 nM and 3.6 nM, respectively.
LY-404187 is a potent, selective and centrally active positive allosteric modulator of AMPA receptors, with the EC50s of 5.65, 0.15, 1.44, 1.66 and 0.21 µM for GluR1i, GluR2i, GluR2o, GluR3i and GluR4i, respectively. LY-404187 has therapeutic potential in a number of psychiatric disorders and neurodegenerative diseases[1][2].
Fanapanel (ZK200775) is a highly selective AMPA/kainate antagonist with little activity against NMDA; have Ki values of 3.2 nM, 100 nM, and 8.5 μM against quisqualate, kainate, and NMDA, respectively.
L-Phenylalanine-13C9 ((S)-2-Amino-3-phenylpropionic acid-13C9) is the 13C-labeled L-Phenylalanine. L-Phenylalanine ((S)-2-Amino-3-phenylpropionic acid) is an essential amino acid isolated from Escherichia coli. L-Phenylalanine is a α2δ subunit of voltage-dependent Ca+ channels antagonist with a Ki of 980 nM. L-phenylalanine is a competitive antagonist for the glycine- and glutamate-binding sites of N-methyl-D-aspartate receptors (NMDARs) (KB of 573 μM ) and non-NMDARs, respectively. L-Phenylalanine is widely used in the production of food flavors and pharmaceuticals[1][2][3][4].
LSP-GR3 is a novel chemically-modified RNA oligonucleotides, called splice modulating oligomers (SMOs), which potently and specifically modulate GluR alternative splicing to GluR3-flip expression throughout the CNS.
Orphenadrine hydrochloride is an uncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist with Ki of 6.0 ±0.7 μM.IC50 value: 6.0 ±0.7 μM (Ki)Target: NMDA ReceptorOrphenadrine has been used as an antiparkinsonian, antispastic and analgesic drug. Orphenadrine inhibits [3H]MK-801 binding to the phencyclidine (PCP) binding site of the N-methyl-D-aspartate (NMDA)-receptor in homogenates of postmortem human frontal cortex with a Ki-value of 6.0 ±0.7 μM. The NMDA receptor antagonistic effects of orphenadrine were assessed using concentration- and patch-clamp techniques on cultured superior colliculus neurones. Orphenadrine blocked open NMDA receptor channels with fast kinetics and in a strongly voltage-dependent manner. The IC50-value against steady state currents at -70 mV was 16.2 ± 1.6 μM (n = 6). [1]. Orphenadrine competitively inhibited [3H]nisoxetine binding in rat vas deferens membranes (Ki = 1.05 ±0.20 μM). It can be concluded that orphenadrine, at low micromolar concentrations, interacts with the noradrenaline reuptake system inhibiting its functionality and thus potentiating the effect of noradrenaline [2].
Glycine-13C2,15N,d2 is the deuterium, 13C and 15N labeled Glycine[1]. Glycine is an inhibitory neurotransmitter in the CNS and also acts as a co-agonist along with glutamate, facilitating an excitatory potential at the glutaminergic N-methyl-D-aspartic acid (NMDA) receptors[2].
(-)-Aspartic acid is an endogenous NMDA receptor agonist.
Aptiganel (CNS 1102 (free base)), peptide, is a noncompetitive NMDA antagonist with cerebroprotective effects. Aptiganel can be used for the research of stroke[1].
Remacemide hydrochloride (FPL 12924AA), a moderate inhibitor of the Na+ channel, is a weak uncompetitive NMDA receptor antagonist with IC50s of 68 μM and 76 μM for MK-801 binding and NMDA currents, respectively[1]. Remacemide hydrochloride is an anticonvulsant agent[2].
IDRA 21 is a positive and orally active modulator of the AMPA receptor. IDRA 21 facilitates excitatory neurotransmission via GluR1/2 receptors. IDRA 21 has the potential for the research of cognitive/memory disorders, including those associated with aging[1].
Transcrocetinate disodium, extracted from saffron (Crocus sativus L.), acts as an NMDA receptor antagonist with high affinity.
Selfotel (CGS 19755) is a selective and competitive antagonist at N-methyl-D-aspartate (NMDA)-preferring receptor. CGS 19755 inhibits the binding of [3H]-3-(2-carboxypiperazin-4-yl)propyl-1-phosphonic acid to NMDA-type receptors with an IC50 of 50 nM[1][2].
Ro 25-6981 is a potent and selective activity-dependent blocker of NMDA receptors containing the NR2B subunit. IC50 values are 0.009 and 52 μM for cloned receptor subunit combinations NR1C/NR2B and NR1C/NR2A respectively.IC50 value: 9 nM [1]Target: NMDA receptor subtype of NR1C & NR2Bin vitro: Ro 25-6981 inhibited 3H-MK-801 binding to rat forebrain membranes in a biphasic manner with IC50 values of 0.003 microM and 149 microM for high- (about 60%) and low-affinity sites, respectively. NMDA receptor subtypes expressed in Xenopus oocytes were blocked with IC50 values of 0.009 microM and 52 microM for the subunit combinations NR1C & NR2B and NR1C & NR2A, respectively, which indicated a >5000-fold selectivity [1]. Increasing the concentration of spermidine did not change the efficacy of RO 25-6981 and minimally changed the IC(50) value. Epsilon1Q336R receptors were more inhibited by ifenprodil and RO 25-9681 than wildtype epsilon1 receptors in ligand binding assays but not in functional assays [2].in vivo: Intrathecal injection of Ro 25-6981 significantly enhanced the paw withdrawal mechanical threshold and paw withdrawal thermal latency after the operation. Significant change has been observed after intrathecal injection of 800.0 μg of Ro 25-6981 and at 2h after operation in the oblique pull test degree and BBB rating score. Pretreatment of Ro 25-6981 decreased the high level expression of NR2B with tyrosine phosphorylation in spinal dorsal horn of the rat model after the operation [3].
GYKI53655 hydrochloride is an α-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) antagonist.
NBQX is a highly selective and competitive AMPA receptor antagonist.
L-Phenylalanine-13C6 ((S)-2-Amino-3-phenylpropionic acid-13C6) is the 13C-labeled L-Phenylalanine. L-Phenylalanine ((S)-2-Amino-3-phenylpropionic acid) is an essential amino acid isolated from Escherichia coli. L-Phenylalanine is a α2δ subunit of voltage-dependent Ca+ channels antagonist with a Ki of 980 nM. L-phenylalanine is a competitive antagonist for the glycine- and glutamate-binding sites of N-methyl-D-aspartate receptors (NMDARs) (KB of 573 μM ) and non-NMDARs, respectively. L-Phenylalanine is widely used in the production of food flavors and pharmaceuticals[1][2][3][4].
7-Chlorokynurenic acid is a selective antagonist at the glycine modulatory site of the N-methyl-D-aspartate receptor complex and also a potent inhibitor of the reuptake of glutamate into synaptic vesicles with a Ki of 0.59 μM.
UBP296 is a potent and selective antagonist of GLUK5-containing kainate receptor in the spinal cord. UBP296 reversibly blocks ATPA-induced depressions of synaptic transmission, and affects AMPA receptor-mediated synaptic transmission directly in rat hippocampal slices[1].
L-Phenylalanine-13C9,15N ((S)-2-Amino-3-phenylpropionic acid-13C9,15N) is the 13C- and 15N-labeled L-Phenylalanine. L-Phenylalanine ((S)-2-Amino-3-phenylpropionic acid) is an essential amino acid isolated from Escherichia coli. L-Phenylalanine is a α2δ subunit of voltage-dependent Ca+ channels antagonist with a Ki of 980 nM. L-phenylalanine is a competitive antagonist for the glycine- and glutamate-binding sites of N-methyl-D-aspartate receptors (NMDARs) (KB of 573 μM ) and non-NMDARs, respectively. L-Phenylalanine is widely used in the production of food flavors and pharmaceuticals[1][2][3][4].
1-BCP is a centrally active drug that modulates AMPA receptor gated currents. 1-BCP is a memory-enhancing agent[1][2].
PF-4778574 is a positive allosteric modulation of AMPA receptor with EC50 of 45 to 919 nM in differenct cells.
Sunifiram (DM-235) is a piperazine derived ampakine-like drug which has nootropic effects in animal studies with significantly higher potency than piracetam.IC50 value: Target: in vitro: DM 232 and DM 235 are novel antiamnesic compounds structurally related to ampakines. The involvement of AMPA receptors in the mechanism of action of DM 232 and DM 235 was, therefore, investigated in vivo and in vitro. Both compounds (0.1 mg/kg i.p.) were able to reverse the amnesia induced by the AMPA receptor antagonist NBQX (30 mg/kg i.p.) in the mouse passive avoidance test. At the effective doses, the investigated compounds did not impair motor coordination, as revealed by the rota rod test, nor modify spontaneous motility and inspection activity, as revealed by the hole board test [1]. In mouse hippocampal slices, sunifiram at 10-100 nM significantly enhanced LTP in a bell-shaped dose-response relationship which peaked at 10 nM. The enhancement of LTP by sunifiram treatment was inhibited by 7-chloro-kynurenic acid (7-ClKN), an antagonist for glycine-binding site of NMDAR, but not by ifenprodil, an inhibitor for polyamine site of NMDAR [2].in vivo: OBX mice were administered once a day for 7-12 days with sunifiram (0.01-1.0 mg/kg p.o.) from 10 days after operation with or without gavestinel (10 mg/kg i.p.), which is glycine-binding site inhibitor of N-methyl-d-aspartate receptor (NMDAR) [3].
Zonampanel (YM 872) is a selective antagonist of the glutamate receptor subtype, α-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) receptor.
AMPA receptor modulator-5 (Example 217) is an AMPA receptor modulator. AMPA receptor modulator-5 can be used for research of neurological disease[1].