NMDA Receptors

N-methyl-D-aspartate (NMDA) receptor antagonists and modulators act on glutamate-gated ion channels in neurons. NMDA receptors take part in excitatory synaptic transmission, synaptic plasticity and excitotoxicity. The first NMDA receptor subunit was cloned from rat brain in 1991. Extracellular magnesium blocks the channel in a voltage-dependent manner, so activation requires both agonist binding and membrane depolarization. The category includes the agonist NMDA itself, the channel blocker memantine hydrochloride and the competitive antagonist SDZ 220-581. Subunit-selective tools include TCN 201, a negative allosteric modulator of GluN2A-containing receptors, and GNE 0723, a positive allosteric modulator of the same receptors.

20 Items

  • Ibotenic Acid
    Cat. No.
    A14006

    Ibotenic Acid

    Synonyms: NSC 204850

    Ibotenic acid is a neuroexcitatory amino acid originally isolated from Amanita species that functions as a NMDA and metabotropic glutamate receptor agonist.

    1 mg
    $35.00
    5 mg
    $85.00
    All 6 sizes
  • (S)-Glutamic acid
    Cat. No.
    A15458

    (S)-Glutamic acid

    Synonyms: (+)-L-Glutamic acid

    (S)-Glutamic acid acts as an excitatory transmitter and an agonist at all subtypes of glutamate receptors (metabotropic, kainate, NMDA, and AMPA).

    1 g
    $25.00
    5 g
    $35.00
    All 2 sizes
  • L-Glutamic acid monosodium salt
    Cat. No.
    A16591

    L-Glutamic acid monosodium salt

    Synonyms: Monosodium glutamate

    L-Glutamic acid monosodium salt acts as an excitatory transmitter and an agonist at all subtypes of glutamate receptors (metabotropic, kainate, NMDA, and AMPA). (S)-Glutamic acid shows a direct activating effect on the release of DA from dopaminergic terminals.

    50 mg
    $25.00
    100 mg
    $40.00
    All 3 sizes
  • (R)-Serine
    Cat. No.
    A17978

    (R)-Serine

    (R)-Serine, an endogenous amino acid involved in glia-synapse interactions that has unique neurotransmitter characteristics, is a potent co-agonist at the NMDA glutamate receptor.

    500 mg
    $40.00
    1 g
    $50.00
    All 3 sizes
  • SYM 2081
    Cat. No.
    A20332

    SYM 2081

    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 mg
    $80.00
    5 mg
    $180.00
    All 7 sizes
  • Quinolinic acid
    Cat. No.
    A20575

    Quinolinic acid

    Quinolinic acid is an endogenous N-methyl-D-aspartate (NMDA) receptor agonist synthesized from L-tryptophan via the kynurenine pathway and thereby has the potential of mediating N-methyl-D-aspartate neuronal damage and dysfunction.

    500 mg
    $20.00
    1 g
    $30.00
    All 4 sizes
  • (-)-Aspartic acid
    Cat. No.
    A20810

    (-)-Aspartic acid

    Synonyms: (R)-Aspartic acid; D-(-)-Aspartic acid

    (-)-Aspartic acid is an endogenous NMDA receptor agonist.

    500 mg
    $35.00
    5 g
    $55.00
    All 4 sizes
  • cis-ACPD
    Cat. No.
    A61891

    cis-ACPD

    Cis-ACPD is a potent agonist of the NMDA receptor, exhibiting an IC50 of 3.3 µM. Additionally, it selectively activates group II metabotropic glutamate receptors, with EC50 values of 13 µM for mGluR2 and 50 µM for mGluR4. The compound is widely used in neuropharmacological research to study excitatory neurotransmission and the role of glutamate receptors in various neurological disorders.

    Out of stock

    All 3 sizes
  • L-Homocysteic acid
    Cat. No.
    A67089

    L-Homocysteic acid

    Synonyms: L-HCA

    L-Homocysteic acid is an endogenous excitatory amino acid functioning as a NMDA receptor agonist, with an effective concentration (EC50) of 14 μM. Its neurotoxic properties make it a valuable tool in the investigation of neurological disorders. L-Homocysteic acid enables researchers to explore the roles of excitatory neurotransmission and contribute to the understanding of related pathophysiological conditions.

    5 mg
    $35.00
    10 mg
    $60.00
    All 2 sizes
  • N-Methyl-DL-aspartic acid
    Cat. No.
    A67164

    N-Methyl-DL-aspartic acid

    N-Methyl-DL-aspartic acid is a glutamate analogue that functions as an NMDA receptor agonist. This compound is primarily utilized in research pertaining to neurological disorders, aiding in the study of synaptic transmission and excitotoxicity associated with various neurodegenerative conditions. Its ability to activate NMDA receptors makes it a valuable tool for investigating the physiological and pathological roles of glutamatergic signaling in the central nervous system.

    1 g
    $25.00
    5 g
    $30.00
    All 2 sizes
  • (RS)-(Tetrazol-5-yl)glycine
    Cat. No.
    A67188

    (RS)-(Tetrazol-5-yl)glycine

    Synonyms: D,L-(tetrazol-5-yl)glycine; LY 285265

    (RS)-(Tetrazol-5-yl)glycine is a potent and selective agonist of the N-methyl-D-aspartate (NMDA) receptor. It exhibits effective stimulation with EC50 values of 99 nM and 1.7 μM for the GluN1/GluN2D and GluN1/GluN2A subtypes, respectively. This compound is utilized in research involving seizure activity and neuronal activation, as evidenced by its ability to induce Fos expression in mice models.

    1 mg
    $25.00
    5 mg
    $30.00
    All 6 sizes
  • TP-050
    Cat. No.
    A67211

    TP-050

    TP-050 is a potent, orally active NMDAR agonist, selectively targeting the GluN2A and GluN2D subtypes with EC50 values of 0.51 μM and 9.6 μM, respectively. This compound effectively crosses the blood-brain barrier, facilitating its role in enhancing hippocampal long-term potentiation and promoting neuronal signal transmission. TP-050 offers valuable applications in neuroscience research, particularly in studies involving synaptic plasticity and cognitive function.

    1 mg
    $235.00
    5 mg
    $590.00
    All 6 sizes
  • LY-395153
    Cat. No.
    A67270

    LY-395153

    LY-395153 is an AMPA receptor enhancer, primarily targeting ionotropic glutamate receptors (iGluRs). It facilitates the binding to both natural and recombinant AMPA receptors, exhibiting variable binding influenced by AMPA receptor agonists. This compound serves as a valuable tool for elucidating regulatory sites of AMPA receptors, making it essential for research in neuropharmacology and understanding synaptic transmission dynamics.

    25 mg
    $1,275.00
    50 mg
    $1,625.00
    All 3 sizes
  • Homoquinolinic acid
    Cat. No.
    A67295

    Homoquinolinic acid

    Homoquinolinic acid is a selective agonist of the NMDAR2 receptor. It is known to enhance excitatory neurotransmission and has implications in studies related to neurodegenerative disorders and synaptic plasticity. This compound is valuable for investigating the role of NMDAR2 signaling in various neurological research applications.

    25 mg
    $1,275.00
    50 mg
    $1,625.00
    All 3 sizes
  • threo-Ifenprodil hemitartrate
    Cat. No.
    A67297

    threo-Ifenprodil hemitartrate

    threo-Ifenprodil hemitartrate is a sigma (σ) receptor agonist, exhibiting Kis of 59.1 nM and 2 nM for σ1 and σ2 receptors, respectively. This compound also acts as a NR2B subunit-selective NMDA receptor antagonist, with an IC50 of 0.22 μM, and demonstrates inhibition of the hERG potassium channel with an IC50 of 88 nM, indicating potential antiarrhythmic activity. threo-Ifenprodil hemitartrate serves as a valuable tool in neuropharmacology and cardiovascular research.

    25 mg
    $1,275.00
    50 mg
    $1,625.00
    All 3 sizes
  • NSC339614 potassium
    Cat. No.
    A67308

    NSC339614 potassium

    NSC339614 potassium acts as a selective enhancer of GluN1/GluN2C and GluN1/GluN2D NMDA receptors. This compound potentiates neuronal responses specifically through these receptor subtypes, while sparing other NMDA receptors and operating independently of L-glutamate or glycine binding. The mechanism is contingent on the unique structure of the agonist ligand binding domain, highlighting its potential as a valuable tool for investigating NMDA receptor subtype functions and developing new therapeutic strategies for neurological disorders.

    25 mg
    $1,275.00
    50 mg
    $1,625.00
    All 3 sizes
  • Benzylaspartic acid
    Cat. No.
    A67316

    Benzylaspartic acid

    Synonyms: IEM-1770

    Benzylaspartic acid, a derivative of aspartic acid, functions as an NMDA agonist. It exhibits significant antidepressant activity and has been shown to inhibit the development of alcohol-abstinence syndrome in chronic alcohol consumption rat models. This compound is particularly suited for use in research focused on depression and its underlying mechanisms.

    Out of stock

    All 3 sizes
  • NMDA agonist 1
    Cat. No.
    A67320

    NMDA agonist 1

    NMDA Agonist 1 is a potent NMDA receptor agonist targeting the GluN1/GluN2B complex. It exhibits a Ki value of 96 nM and acts as a partial agonist with an EC50 of 78 nM. This compound is valuable for researching the functional roles of NMDA receptors in neuropharmacology and studying their implications in neurological disorders.

    Out of stock

    All 3 sizes
  • trans-ACBD
    Cat. No.
    A67400

    trans-ACBD

    Synonyms: trans-1-Aminocyclobutane-1,3-dicarboxylic acid

    trans-ACBD (trans-1-Aminocyclobutane-1,3-dicarboxylic acid) is a potent and selective agonist of the NMDA receptor, primarily targeting glutamatergic neurotransmission. Its ability to modulate NMDA receptor activity makes trans-ACBD a valuable tool in the study of neurobiology, synaptic plasticity, and related disorders. This compound is suitable for diverse research applications involving excitatory neurotransmission pathways.

    1 mg
    $30.00
    2 mg
    $40.00
    All 7 sizes

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