4-methylphenylisobutylamine 4-methylphenylisobutylamine 4-methylphenylisobutylamine (4-mab), also known as 4-methyl-α-ethylphenethylamine, is a stimulant drug of the phenethylamine class. 4-methylphenylisobutylamineclinical dataroutes ofadministrationoralatc codenonelegal statuslegal status uncontrolled (but may be covered under the federal analogue act in the united states and under similar bills in other countries) identifiers iupac name 1-(4-methylphenyl)butan-2-amine cas number147702-26-9 yhcl: 861007-56-9 ypubchem cid43566024chemspider13914039 yuniivyc2g7r2pchcl: tx348r5pzp ycomptox dashboard (epa)dtxsid90656191 chemical and physical dataformulac11h17nmolar mass163.264 g·mol−13d model (jsmol)interactive image smiles c1cc(c)ccc1cc(n)cc inchi inchi=1s/c11h17n/c1-9(2)8-12-11-6-4-10(3)5-7-11/h4-7,9,12h,8h2,1-3h3 ykey:wzwnivyqwjrdqx-uhfffaoysa-n y ny (what is this?) (verify)