n-ethylbuphedrone n-ethylbuphedrone n-ethylbuphedrone (also known as neb) is a stimulant of the cathinone class that has been sold as a designer drug. it is the β-ketone analogue of n,alpha-diethylphenylethylamine. n-ethylbuphedronelegal statuslegal status de: anlage i (authorized scientific use only) uk: class b identifiers iupac name 2-(ethylamino)-1-phenylbutan-1-one cas number1354631-28-9pubchem cid20326296chemspider15397161uniivuf6vc063qcomptox dashboard (epa)dtxsid30605441 chemical and physical dataformulac12h17nomolar mass191.274 g·mol−13d model (jsmol)interactive image smiles ccnc(cc)c(=o)c1ccccc1 inchi inchi=1s/c12h17no/c1-3-11(13-4-2)12(14)10-8-6-5-7-9-10/h5-9,11,13h,3-4h2,1-2h3key:hepvrdhguwfxjs-uhfffaoysa-n legal status as of october 2015 neb is a controlled substance in china. in the united states neb is considered a schedule 1 controlled substance as a positional isomer of 4-methylethcathinone (4-mec)