Radiprodil (RGH-896) is an orally active and selective NMDA NR2B antagonist. A potential therapeutic agent in treatment of neuropathic pain and possibly other chronic pain conditions[1].
NBQX disodium (FG9202 disodium) is a highly selective and competitive AMPA receptor antagonist. NBQX disodium has neuroprotective and anticonvulsant activity[1].
Fluoroethylnormemantine hydrochloride, a derivative of Memantine, is an antagonist of the N-methyl-D-aspartate (NMDA) receptor. [18F]-Fluoroethylnormemantine hydrochloride can be used as a positron emission tomography (PET) tracer. Fluoroethylnormemantine hydrochloride exhibits anti-amnesic, neuroprotective, antidepressant-like and fear-attenuating effects[1][2][3].
Glycine-1-13C,15N is the 13C- and 15N-labeled Glycine. 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.
CX614 is a positive variant modulator of AMPA receptors that enhances excitatory postsynaptic potentials (amplitude and duration) by blocking and slowing the inactivation of responses to glutamate and automatically evokes excitatory postsynaptic currents in neuronal cultures. CX614 can be used in the study of psychiatric disorders such as depression[1][2].
SYM 2206 is a novel, potent, non-competitive AMPA receptor antagonist (IC50= 2.8 μM).IC50 value: 2.8 μMTarget: AMPA receptorSYM 2206 exerts anticonvulsant effects, elevates the threshold for maximal electroshock-induced seizures in mice. TID20 and TID50(threshold increasing doses by 20% and 50%) values for SYM 2206 are 4.25 and 10.56 mg/kg in the MEST test in mice, respectively.
(RS)-AMPA ((±)-AMPA) is a glutamate analogue and a potent and selective excitatory neurotransmitter L-glutamic acid agonist. (RS)-AMPA does not interfere with binding sites for kainic acid or NMDA receptors[1][2].
(RS)-CPP ((±)-CPP) is a potent and selective NMDA antagonist. (RS)-CPP inhibits central neuron responses, and has anticonvulsant activity[1].
A novel potent and selective negative modulator of AMPA receptors containing TARP-gamma8
gamma-DGG is a competitive AMPA receptor blocker.
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).
Glycine-13C2 is the 13C-labeled Glycine. 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.
QNZ46 is a NR2C/NR2D-selective NMDA receptor non-competitive antagonist (IC50 values are 3, 6, 229, and >300, >300 μM for NR2D, NR2C, NR2A, NR2B, and GluR1, respectively). IC50 value: 3 μM (for NR2D), 6 μM (for NR2C), 229 μM (for NR2D NR2A)Target: NR2D, NR2C, NR2Ain vitro: QNZ46 is a noncompetitive inhibitor of GluN2C/D containing NMDA receptors. KD and IC50 values for binding and inhibition of GluN1/Glun2D receptors by QNZ46 are 4.9 and 3.9 μM, respectively. QNZ46 does not compete for binding of glutamate or glycine, but QNZ46 receptor binding requires the binding of glutamate to the GluN2 subunit.
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].
CNQX disodium (FG9065 disodium) is a potent and competitive AMPA/kainate receptor antagonist with IC50s of 0.3 μM and 1.5 μM, respectively. CNQX disodium is a competitive non-NMDA receptor antagonist[1]. CNQX disodium blocks the expression of fear-potentiated startle in rats[5].
PPDA is a subtype-selective NMDA receptor antagonist that preferentially binds to NR2C/NR2D containing receptors[1].
UBP 302, the S enantiomer, is a potent and selective GluK1 (GluR5)-subunit containing kainate receptor antagonist (apparent Kd=402 nM), and displays very little affinity on GluK2 (GluR6) kainate receptors. Anxiolytic effects[1][2][3].
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].
L-Phenylalanine-13C9,d8,15N ((S)-2-Amino-3-phenylpropionic acid-13C9,d8,15N) is the deuterium, 13C-, and 15-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].
Indole-2-carboxylic acid-13C is the 13C-labeled Indole-2-carboxylic acid. Indole-2-carboxylic acid is a strong inhibitor of lipid peroxidation. Indole-2-carboxylic acid (I2CA) specifically and competitively inhibits the potentiation by glycine of NMDA-gated current[1][2].
Glycine-d2,15N is the deuterium and 15N-labeled Glycine. 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.
LY 233536 is a competitive NMDA receptor antagonist[1].
SDZ 220-040 is a competitive the mammalian NMDA receptor antagonist[1].
Conantokin-T is a γ-carboxyglutamate-containing, N-methyl-D-aspartate (NMDA) antagonist peptidewith an IC50 value of 2 μM. Conantokin-T inhibits NMDA receptor-mediated calcium influx in central nervous system neurons. Conantokin-T can be purified from the venom of the fish-hunting cone snail, Conus tulipa[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].
3,5-Dihydroxy-2-naphthoic acid is a Naphthoic acid derivative. Naphthoic acid is a NMDA receptor allosteric modulator[1].
Talampanel is a potent and selective AMPA-receptor antagonist, is a potential new antiepileptic drug (AED). Target: AMPA [1]in vitro: Talampanel is a glutamate receptor inhibitor with anti-seizure activity.in vivo： Talampanel reduces motoneuronal calcium in a mouse model of ALS, but its effi cacy declines as the disease progresses, suggesting that medication initiation in the earlier stages of the disease might be more effective. [2]
PEAQX(NVP-AAM 077) is a potent and orally active NMDA antagonist with a 15-fold preference for human NMDA receptors with the 1A/2A(IC50=270 nM), rather than 1A/2B(29,600 nM).IC50 value: 270 nM(hNMDA A1/A2) [1]Target: NR2A antagonistin vitro: PEAQX has a high binding affinity for NMDA receptors (IC50=8 nM), and a functional preference in excess of 100-fold for hNMDA 1A/2A (IC50=of 270 nM) over 1A/2B receptors (IC50=29,600 nM) [1].in vivo: PEAQX is practically inactive in Xenopus oocytes expressing hNMDA 1A/2B receptors, displays an ED50 value of 23 mg/kg in the MES test [1]. Sprague-Dawley rats were treated on PN7, PN9, and PN11 with PCP (10 mg/kg), PEAQX (NR2A-preferring antagonist; 10, 20, or 40 mg/kg), or ifenprodil (selective NR2B antagonist; 1, 5, or 10 mg/kg) and sacrificed for measurement of caspase-3 activity (an index of apoptosis) or allowed to age and tested for locomotor sensitization to PCP challenge on PN28-PN35. PCP or PEAQX on PN7, PN9, and PN11 markedly elevated caspase-3 activity in the cortex; ifenprodil showed no effect. Striatal apoptosis was evident only after subchronic treatment with a high dose of PEAQX (20 mg/kg). Animals treated with PCP or PEAQX on PN7, PN9, and PN11 showed a sensitized locomotor response to PCP challenge on PN28-PN35 [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.
L-Glutamic acid-13C5,d5,15N is the deuterium, 13C-, and 15-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.