Foliglurax (PXT002331) is a highly selective and potent, brain-penetrant metabotropic glutamate receptor 4 positive allosteric modulator (mGluR4 PAM) with an EC50 of 79 nM. Antiparkinsonian effect.
AZD-8529 is a potent, highly selective and orally bioavailable positive allosteric modulator of mGluR2, with an EC50 of 285 nM, and shows no positive allosteric modulator responses at 20-25 M on the mGluR1, 3, 4, 5, 6, 7, and 8 subtypes.
Anandamide is an immune modulator in the central nervous system acts via not only cannabinoid receptors (CB1 and CB2) but also other targets (e.g., GPR18/GPR55).