L-AP4 monohydrate  (Synonyms: L-APB monohydrate)

L-AP4 (L-APB) monohydrate is a potent and specific agonist for the group III mGluRs, with EC₅₀s of 0.13, 0.29, 1.0, 249 μM for mGlu₄, mGlu₈, mGlu₆ and mGlu₇ receptors, respectively^[1][2].

L-AP4 (5-30 μg, intrathecal inhection 4-5 days) significantly increases the paw withdrawal threshold in response to application of von Frey filaments in eight nerve-ligated rats in a dose-dependent manner. Intrathecal administration of different doses of L-AP4 is not associated with any evident motor dysfunction^[2].
Intrathecal injection of 30 μg of L-AP4 does not significantly alter the paw withdrawal latency in these normal rats^[2].
Topical application of 5 to 50 μM L-AP4 to the spinal cord significantly inhibited the evoked response of neurons to touch, pressure, pinch, and von Frey filaments in a concentration-dependent fashion^[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

201.11

C₄H₁₂NO₆P

2247534-79-6

Solid

White to off-white

O=C(O)[C@@H](N)CCP(O)(O)=O.O

Room temperature in continental US; may vary elsewhere.

4°C, sealed storage, away from moisture and light

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

• [1]. Selvam C, et al. Increased Potency and Selectivity for Group III Metabotropic Glutamate Receptor Agonists Binding at Dual sites. J Med Chem. 2018 Mar 8;61(5):1969-1989.  [Content Brief]

  [2]. Chen SR, et al. Distinct roles of group III metabotropic glutamate receptors in control of nociception and dorsal horn neurons in normal and nerve-injured Rats. J Pharmacol Exp Ther. 2005 Jan;312(1):120-6.  [Content Brief]