Potent, selective mGlu8a agonist (EC50 = 31 nM). Displays > 100-fold selectivity over mGlu1-7 and displays little or no activity at NMDA and kainate receptors. Increases c-Fos expression in stress-related brain areas following systemic administration in mice in vivo. Also potent anticonvulsant in mice in vivo. Caged (S)-3,4-DCPG, Racemate and R-enantiomer also available.. Purity 98%. MW (observed): 239.18