• Product name
    NMDA, excitotoxic amino acid
  • Description
    Excitotoxic amino acid
  • Biological description
    Excitotoxic amino acid. Prototypic agonist at the ionotropic NMDA glutamate receptor which is involved in long-term potentiation, ischemia, and epilepsy. Also available in Kit: Ionotropic agonists (ab120323).

    Also available in simple stock solutions (ab146698) - add 1 ml of water to get an exact, ready-to-use concentration.
  • Purity
    > 99%
  • CAS Number
  • Chemical structure
    Chemical Structure



Our Abpromise guarantee covers the use of ab120052 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Functional Studies Use at an assay dependent concentration.


  • Release of adenosine by depolarisation and agonists.

    (Panel c) NMDA application also evoked neuronal depolarisation and firing accompanied by subsequent release of adenosine and inosine.

  • ab55051 staining GABA B receptor 1 in SK-N-SH cells treated with NMDA (ab120052), by ICC/IF. Internalization of GABA B receptor 1 correlates with increased concentration of NMDA, as described in literature.
    The cells were incubated at 37°C for 30 minutes in media containing different concentrations of ab120052 (NMDA) in DMSO, fixed with 4% formaldehyde for 10 minutes at room temperature and blocked with PBS containing 10% goat serum, 0.3 M glycine, 1% BSA and 0.1% tween for 2h at room temperature. Staining of the treated cells with ab55051 (1 µg/ml) was performed overnight at 4°C in PBS containing 1% BSA and 0.1% tween. A DyLight 488 goat anti-mouse polyclonal antibody (ab96879) at 1/250 dilution was used as the secondary antibody. Nuclei were counterstained with DAPI and are shown in blue.


This product has been referenced in:
  • Kew JN & Kemp JA Ionotropic and metabotropic glutamate receptor structure and pharmacology. Psychopharmacology (Berl) 179:4-29 (2005). Read more (PubMed: 15731895) »
  • Collingridge GL & Lester RA Excitatory amino acid receptors in the vertebrate central nervous system. Pharmacol Rev 41:143-210 (1989). Read more (PubMed: 2558391) »
  • Hansen JJ & Krogsgaard-Larsen P Structural, conformational, and stereochemical requirements of central excitatory amino acid receptors. Med Res Rev 10:55-94 (0). Read more (PubMed: 2153264) »
See all 13 Publications for this product

Customer reviews and Q&As


Thank you for contacting us.
I am sorry to hear you are not observing the expected results with the reagent supplied.
It is possible that ab120052 acts more potently due to it having a higher purity when compared to Sigma’s. I have attached the NMP spectra for ab120052. If you had Sigma’s NMR spectra for this product, we would be happy to compare it against ours to determine if this is the case.
It is also worth considering that variations in the strength of the epileptoformic seizures can occur due to variations in batches of rats.
We would also recommend using the batch specific molecular weight when calculating doses.
As a final note, variations in seizure strength could occur if the solvent/saline solution is not fresh or contaminated – this should be checked before carrying out experimental procedures.
I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.

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