For research use only.

Catalog No.S2809

1 publication

MPEP Chemical Structure

CAS No. 96206-92-7

MPEP is a selective mGlu5 receptor antagonist with IC50 of 36 nM, exhibits no appreciable activity at mGlu1b/2/3/4a/7b/8a/6 receptors.

Selleck's MPEP has been cited by 1 publication

1 Customer Review

  • The expression of mGluR5 and Homer were detected by Western blot and analysed by ImageJ. a–c Cells were treated with various concentrations of pu-erh tea for 12 h. d–f Cells were treated with 62.5 μg/mL pu-erh tea for 3, 6, 9, 12 h. g-i Cells were treated with 62.5 μg/mL pu-erh, black, or green teas for 12 h. Data were analysed using GraphPad Prism software (***p < 0.001 vs. vehicle control, **p < 0.01 vs. vehicle control, n = 3)

    Mol Neurobiol, 2017, 54(7):5286-5299. MPEP purchased from Selleck.

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Biological Activity

Description MPEP is a selective mGlu5 receptor antagonist with IC50 of 36 nM, exhibits no appreciable activity at mGlu1b/2/3/4a/7b/8a/6 receptors.
Features Inactive against other group I/II/III metabotropic glutamate receptors.
mGluR5 [1]
36 nM
In vitro

MPEP has no appreciable agonist or antagonist activity at the closely related recombinant human mGlu1b receptor expressed in CHO-K1 cells or a purinoreceptor endogenously expressed in L(tk-) cells up to concentrations of 100 μM. Furthermore, MPEP shows no appreciable agonist or antagonist activity in cAMP accumulation or [35S]-GTPγS binding assays at the recombinant human group II and III metabotropic receptors (human mGlu2, -3, -4a, -6, -7b, -8a) as well as the human NMDA (NMDAR1A/2A, -1A/2B), rat AMPA (GluR3) and human kainate (GluR6) receptor subtypes. In slices of rat neonatal hippocampus, striatum, and cortex but not cerebellum, MPEP inhibits DHPG-stimulated PI hydrolysis with IC50 of 8.0 nM, 20.5 nM, and 17.9 nM, respectively. [1] MPEP positively modulates the hmGluR4 in a recombinant expression system, and the effect of MPEP is fully dependent on the activation of the orthosteric agonist L-AP4. [3]

In vivo When microiontophoretically applied into the brain of rats, MPEP reduces DHPG-induced excitations but not the excitations induced by AMPA. Following intravenous administration, MPEP produces a dose-dependent inhibition of DHPG-induced but not AMPA-induced excitations with a rapid onset of action. Oral administration of MPEP also exhibits excellent anti-hyperalgesic activity in the Complete Freund's Adjuvant and turpentine models of inflammatory pain. [1] MPEP (1-30 mg/kg) induces anxiolytic-like effects in the conflict drinking test and the elevated plus-maze test in rats as well as in the four-plate test in mice. MPEP (1-20 mg/kg) shortens the immobility time in a tail suspension test in mice, but it is inactive in the behavioural despair test in rats. MPEP has no effect on locomotor activity or motor coordination. [2] MPEP significantly reduces fmr1 but not wild-type center square entries and duration. In open field tests, MPEP reduces fmr1tm1Cgr center field behavior to one indistinguishable from wild-type. MPEP produces a significant reduction of total locomotor activity in three of four groups tested, at both 10 mg/kg and 30 mg/kg. [4]


Animal Research:[2]
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  • Animal Models: Male Wistar rats, male Albino Swiss mice, or male C57BL/6J mice subjected to various tests
  • Dosages: ~30 mg/kg
  • Administration: Administered intraperitoneally (i.p.) or perorally (p.o.) at 60 minutes before the tests
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 39 mg/mL (201.82 mM)
Ethanol 39 mg/mL (201.82 mM)
Water Insoluble
In vivo Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
2% DMSO+30% PEG 300+5% Tween 80
For best results, use promptly after mixing.

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 193.24


CAS No. 96206-92-7
Storage powder
in solvent
Synonyms N/A
Smiles CC1=NC(=CC=C1)C#CC2=CC=CC=C2

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