phccc phccc phccc is a research drug which acts as a glutamate receptor ligand, particularly being a positive allosteric modulator at the mglur4 subtype, as well as an agonist at mglur6. it has anxiolytic effects in animal studies. phccc and similar drugs have been suggested as novel treatments for parkinson's disease. phcccidentifiers iupac name (−)-n-phenyl-7-(hydroxyimino)cyclopropachromen-1a-carboxamide pubchem cid3579925chemical and physical dataformulac17h14n2o3molar mass294.310 g·mol−13d model (jsmol)interactive image smiles c4ccccc4nc(=o)c1(cc1c2=no)oc3ccccc23 (verify)