oxiperomide oxiperomide oxiperomide is an antipsychotic. clinical trials demonstrated that it can reduce dyskinesia in patients with parkinson's disease who are taking dopamine agonists without increasing parkinsonian symptoms. it does this by selectively antagonizing dopamine receptors. further development of this drug is not available. it appears to have never been marketed. oxiperomideclinical dataroutes ofadministrationoralidentifiers iupac name 3--1h-benzimidazol-2-one cas number5322-53-2pubchem cid68634chemspider61893uniiwro75m6rw2keggd02676chemblchembl2059304comptox dashboard (epa)dtxsid30201306 chemical and physical dataformulac20h23n3o2molar mass337.423 g·mol−13d model (jsmol)interactive image smiles c1cn(ccc1n2c3=cc=cc=c3nc2=o)ccoc4=cc=cc=c4 inchi inchi=1s/c20h23n3o2/c24-20-21-18-8-4-5-9-19(18)23(20)16-10-12-22(13-11-16)14-15-25-17-6-2-1-3-7-17/h1-9,16h,10-15h2,(h,21,24)key:nvdbbgbutklrsn-uhfffaoysa-n