Bifeprunox

Bifeprunox
Clinical data
ATC code
  • none
Identifiers
  • 7-[4-(biphenyl-3-ylmethyl)piperazin-1-yl]-1,3-benzoxazol-2(3H)-one
CAS Number
PubChem CID
ChemSpider
UNII
ChEMBL
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC24H23N3O2
Molar mass385.467 g·mol−1
3D model (JSmol)
  • O=C2Oc1c(cccc1N2)N5CCN(Cc4cccc(c3ccccc3)c4)CC5
  • InChI=1S/C24H23N3O2/c28-24-25-21-10-5-11-22(23(21)29-24)27-14-12-26(13-15-27)17-18-6-4-9-20(16-18)19-7-2-1-3-8-19/h1-11,16H,12-15,17H2,(H,25,28) Y
  • Key:CYGODHVAJQTCBG-UHFFFAOYSA-N Y
 NY (what is this?)  (verify)

Bifeprunox (INN; code name DU-127,090) is an atypical antipsychotic which, similarly to aripiprazole, combines minimal D2 receptor agonism with serotonin receptor agonism. It was under development for the treatment of schizophrenia, psychosis and Parkinson's disease.

In a multi-center, placebo-controlled study, 20 mg of bifeprunox was found to be significantly more effective than placebo at reducing symptoms of schizophrenia, with a low incidence of side effects. An NDA for Bifeprunox was filed with the U.S. Food and Drug Administration in January 2007. The FDA rejected the application in August 2007. In June 2009, Solvay and Wyeth decided to cease development because "efficacy data did not support pursuing the existing development strategy of stabilisation of non-acute patients with schizophrenia."