n-ethylnorketamine n-ethylnorketamine n-ethylnorketamine (ethketamine, nenk, 2-cl-2'-oxo-pce) is a designer drug which is presumed to have similar properties to ketamine, a dissociative anesthetic drug with hallucinogenic and sedative effects. it has been sold over the internet since around september 2012, and identified in seized drug samples by analytical laboratories in the uk and other european countries. n-ethylnorketamineclinical dataatc codenonelegal statuslegal status ca: schedule i de: npsg (industrial and scientific use only) uk: class b identifiers iupac name 2-(2-chlorophenyl)-2-(ethylamino)cyclohexan-1-one cas number1354634-10-8pubchem cid57483649chemspider35805667uniitll3802a3pchemical and physical dataformulac14h18clnomolar mass251.75 g·mol−13d model (jsmol)interactive image smiles clc2ccccc2c1(ncc)ccccc1=o inchi inchi=1s/c14h18clno/c1-2-16-14(10-6-5-9-13(14)17)11-7-3-4-8-12(11)15/h3-4,7-8,16h,2,5-6,9-10h2,1h3key:itbbbziifjjmdu-uhfffaoysa-n in mice, tt is an nmda receptor antagonist and ampa and 5-ht2 receptor agonist. legal status as of october 2015 nenk is a controlled substance in the united kingdom, china, and the us state of alabama.