Xylopropamine
Xylopropamine ( Perhedrin , Esanin ) , also known as 3 , 4-dimethylamphetamine , is a stimulant drug of the phenethylamine and amphetamine classes which was developed and marketed as an appetite suppressant in the 1950s . 
<triplet> amphetamine <subj> phenethylamine <obj> subclass of