piperylone piperylone piperylone is a pyrazolone with analgesic, anti-inflammatory, and antipyretic properties. piperyloneidentifiers iupac name 4-ethyl-2-(1-methylpiperidin-4-yl)-5-phenyl-1h-pyrazol-3-one cas number2531-04-6pubchem cid17319chemspider16389uniixwh5vh1l2fcomptox dashboard (epa)dtxsid90179956 echa infocard100.017.990 chemical and physical dataformulac17h23n3omolar mass285.391 g·mol−13d model (jsmol)interactive image smiles ccc1=c(nn(c1=o)c2ccn(cc2)c)c3=cc=cc=c3 inchi inchi=1s/c17h23n3o/c1-3-15-16(13-7-5-4-6-8-13)18-20(17(15)21)14-9-11-19(2)12-10-14/h4-8,14,18h,3,9-12h2,1-2h3key:lbfgqucaqwafnn-uhfffaoysa-n