Abstract
Di-(1-phenylisopropyl) formamide (I) has been identified as a by-product in the Leuckart synthesis of N-formylamphetamine [1,2], a reaction precursor to dl-amphetamine. Significantly, it has been detected as an impurity in exhibits of illicitly manufactured dl-amphetamine [3,4] but identified incorrectly as tri-(1-isopropylphenyl) amine (II) [3].