Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Isopropylbenzylamine is a chemical compound used as an intermediate in the pharmaceutical industry as a precursor to the manufacture of some drugs. It has recently come to the attention of the DEA due to its use by illicit methamphetamine manufacturers as a diluting agent which is very similar in appearance and physical properties to methamphetamine and is cheap and not currently illegal. Isopropylbenzylamine is a structural isomer of methamphetamine, and has the same molar mass. It is also a secondary amine like methamphetamine, and forms salts in the same way.