timiperone timiperone timiperone, sold under the brand name tolopelon, is a typical antipsychotic of the butyrophenone class which is marketed in japan for the treatment of schizophrenia. it is similar in chemical structure to benperidol, but has a thiourea group instead of a urea group. it acts as an antagonist for the d2 and 5-ht2a receptors. timiperoneclinical datatrade namestolopelonahfs/drugs.cominternational drug namesroutes ofadministrationby mouthatc codenonelegal statuslegal status in general: ℞ (prescription only) identifiers iupac name 1-(4-fluorophenyl)-4-butan-1-one cas number57648-21-2 ypubchem cid3033151chemspider2297930 nunii626dq7n19lkeggd02035 ychemblchembl2107117comptox dashboard (epa)dtxsid9023673 echa infocard100.055.328 chemical and physical dataformulac22h24fn3osmolar mass397.51 g·mol−13d model (jsmol)interactive image smiles c1cn(ccc1n2c3=cc=cc=c3nc2=s)cccc(=o)c4=cc=c(c=c4)f inchi inchi=1s/c22h24fn3os/c23-17-9-7-16(8-10-17)21(27)6-3-13-25-14-11-18(12-15-25)26-20-5-2-1-4-19(20)24-22(26)28/h1-2,4-5,7-10,18h,3,6,11-15h2,(h,24,28) nkey:ydlqklwvkkfpii-uhfffaoysa-n n ny (what is this?) (verify)