phenylisobutylamine phenylisobutylamine phenylisobutylamine, also known as α-ethylphenethylamine, butanphenamine, b or aepea, is a stimulant drug of the phenethylamine class. it is a higher homologue of amphetamine, differing from amphetamine's molecular structure only by the substitution of the methyl group at the alpha position of the side chain with an ethyl group. compared to amphetamine, phenylisobutylamine has strongly reduced dopaminergic effects, and instead acts as a selective norepinephrine releasing agent. the dextroisomer of phenylisobutylamine partially substitutes for dextroamphetamine in rats. phenylisobutylamineclinical dataroutes ofadministrationoralatc codenonelegal statuslegal status ca: schedule i de: npsg (industrial and scientific use only) uk: class a us: schedule ii (isomer of methamphetamine) identifiers iupac name 1-phenylbutan-2-amine cas number53309-89-0pubchem cid103771chemspider93687comptox dashboard (epa)dtxsid50874112 chemical and physical dataformulac10h15nmolar mass149.237 g·mol−13d model (jsmol)interactive image smiles ccc(cc1=cc=cc=c1)n inchi inchi=1s/c10h15n/c1-2-10(11)8-9-6-4-3-5-7-9/h3-7,10h,2,8,11h2,1h3key:iolqwlohkzendw-uhfffaoysa-n a number of derivatives of phenylisobutylamine are known, including bdb, mbdb, ebdb, butylone (βk-mbdb), eutylone (βk-ebdb), ariadne (α-et-dom), 4-cab, and 4-mab. "phenylisobutylamine" is in fact a chemical misnomer because isobutylamine itself contains a branched chain. the correct name after this style for this class of compound would be "phenylsecbutylamine".