VU6001966 (compound 15m) is a potent and cross the blood-brain barrier mGlu2 (metabotropic glutamate receptor 2) negative allosteric modulator with IC50s of 78 nM and >30 µM for mGlu2 and mGlu3, respectively. VU6001966 can serve as an mGlu2 PET tracer[1].
