4'-methoxy-α-pyrrolidinopentiophenone 4'-methoxy-α-pyrrolidinopentiophenone 4'-methoxy-α-pyrrolidinopentiophenone (also known as o-2417, 4-meo-α-pvp and mopvp) is a stimulant drug of the cathinone class that has been sold online as a designer drug. 4'-methoxy-α-pyrrolidinopentiophenonelegal statuslegal status ca: schedule i de: npsg (industrial and scientific use only) uk: class b illegal in china identifiers iupac name 1-(4-methoxyphenyl)-2-(pyrrolidin-1-yl)pentan-1-one cas number14979-97-6 yhcl: 5537-19-9 ypubchem cid11299968chemspider9474945uniium9572uf9lhcl: vo3305hz8i ychemblchembl381127chemical and physical dataformulac16h23no2molar mass261.365 g·mol−13d model (jsmol)interactive image smiles coc1=cc=c(c(c(ccc)n2cccc2)=o)c=c1.cl inchi inchi=1s/c16h23no2/c1-3-6-15(17-11-4-5-12-17)16(18)13-7-9-14(19-2)10-8-13/h7-10,15h,3-6,11-12h2,1-2h3key:hwyvhrckbxgzlv-uhfffaoysa-n legal status as of october 2015 4-meo-α-pvp is a controlled substance in china.