n-ethylheptylone n-ethylheptylone n-ethylheptylone (hep) is a recreational designer drug from the substituted cathinone family, with stimulant effects. it is a homologue of related drugs such as ethylone, eutylone, ephylone and n-ethylhexylone but with a longer heptyl side chain. it was first reported in sweden in 2019. n-ethylheptyloneidentifiers iupac name 1-(1,3-benzodioxol-5-yl)-2-(ethylamino)heptan-1-one pubchem cid163195976chemical and physical dataformulac16h23no3molar mass277.364 g·mol−13d model (jsmol)interactive image smiles cccccc(ncc)c(=o)c1ccc2ococ2c1 inchi inchi=1s/c16h23no3/c1-3-5-6-7-13(17-4-2)16(18)12-8-9-14-15(10-12)20-11-19-14/h8-10,13,17h,3-7,11h2,1-2h3key:zyfsmtzzszklku-uhfffaoysa-n