dipentylone dipentylone dipentylone (also known as dimethylpentylone) is a substituted cathinone derivative with stimulant effects, which has been sold as a designer drug, first detected in sweden in 2014. dipentylonelegal statuslegal status de: npsg (industrial and scientific use only) uk: class b identifiers iupac name 1-(1,3-benzodioxol-5-yl)-2-(dimethylamino)pentan-1-one cas number803614-36-0 y 17763-13-2 (hydrochloride)pubchem cid119057570chemspider52085278uniiv41961i345chemical and physical dataformulac14h19no3molar mass249.310 g·mol−13d model (jsmol)interactive image smiles cccc(c(=o)c1=cc2=c(c=c1)oco2)n(c)c inchi inchi=1s/c14h19no3/c1-4-5-11(15(2)3)14(16)10-6-7-12-13(8-10)18-9-17-12/h6-8,11h,4-5,9h2,1-3h3key:pqtjkfuxrbkonz-uhfffaoysa-n n,n-dimethylpentylone was first identified in toxicology samples in the usa in late 2021 and has been tracked by the center for forensic science research and education (cfsre) as an increasing common drug mismarketed as mdma where eutylone was previously commonly mismarketed as mdma. dimethylpentylone is not specifically listed in the united states controlled substance act but would likely be considered illegal as a positional isomer of n-ethylpentylone which is a schedule 1 substance in the united states and defined as "all isomers" within that definition. pentylone is a known metabolite of dimethylpentylone.