Green’s Dictionary of Slang

(US drugs) the drug 4-methylaminorex.

2005

Microgram Bulletin XXXVIII:2 31: 🌐 On December 2, 2004, Fort Lauderdale Police officers and Drug Enforcement Administration (DEA) agents responding to an anonymous tip seized an operational laboratory used to make three illegal drugs – 4-methylaminorex (also known as U4Euh, euphoria, and intellex), MDMA (3,4-methylenedioxymethamphetamine, also known as ecstasy), and crystal methamphetamine (also known as ice).