elopiprazole elopiprazole elopiprazole is an antipsychotic drug of the phenylpiperazine class which was never marketed. elopiprazoleclinical dataroutes ofadministrationoralatc codenonelegal statuslegal status in general: uncontrolled identifiers iupac name 1-(1-benzofuran-7-yl)-4-methyl]piperazine cas number115464-77-2pubchem cid208917chemspider181013unii419a0r564uchemblchembl292187comptox dashboard (epa)dtxsid20151109 chemical and physical dataformulac23h22fn3omolar mass375.447 g·mol−13d model (jsmol)interactive image smiles fc1ccc(cc1)c2ccc(2)cn5ccn(c4cccc3c4occ3)cc5