N-isopropylbenzylamine is a compound that has appeared in chemical literature often playing an intermediary role in applications of experimental synthesis and novel organic transformations. Despite having limited documented uses, it is most well known for having previously come to the attention of the DEA due to being used by illicit methamphetamine manufacturers as a diluent of or substitute for methamphetamine, with many recorded sightings occurring in the years 2007-2008. As of 2018, researchers from the DEA associated with the Methamphetamine Profiling Program, which categorizes route-specific and other impurities in seized drug samples, has stated that isopropylbenzylamine appears only "occasionally". This compound is a chain isomer of methamphetamine that exhibits the same chemical f