alpha-pyrrolidinopentiothiophenone alpha-pyrrolidinopentiothiophenone α-pyrro​lidino​pentio​thiophenone (also known as α-pvt) is a synthetic stimulant of the cathinone class that has been sold online as a designer drug. it is an analogue of α-pvp where the phenyl ring has been replaced by thiophene. alpha-pyrrolidinopentiothiophenonelegal statuslegal status de: anlage ii (authorized trade only, not prescriptible) uk: class b illegal in china, sweden and switzerland identifiers iupac name 2-(pyrrolidin-1-yl)-1-(thiophen-2-yl)pentan-1-one cas number1400742-66-6pubchem cid71721462chemspider29738196unii6ja2k09914comptox dashboard (epa)dtxsid90857020 chemical and physical dataformulac13h19nosmolar mass237.36 g·mol−13d model (jsmol)interactive image smiles cccc(n1cccc1)c(=o)c2sccc2 inchi inchi=1s/c13h19nos/c1-2-6-11(14-8-3-4-9-14)13(15)12-7-5-10-16-12/h5,7,10-11h,2-4,6,8-9h2,1h3key:oosrpguqjakblv-uhfffaoysa-n α-pvt was first identified in japan in 2013. its metabolism has been described in literature. side effects α-pvt has been shown to possess high cytotoxicity against human cell lines. legality sweden's public health agency suggested classifying α-pvt as hazardous substance on november 10, 2014. as of october 2015 α-pvt is a controlled substance in china. α-pvt is illegal in switzerland as of december 2015.