3-Chloromethamphetamine (3-CMA, MCMA) is a substituted amphetamine derivative invented in the 1960s. In animal studies it was deemed to be a "hallucinogen" rather than a stimulant, though the assays used at the time did not distinguish between the compounds now termed psychedelics and those now termed empathogens.[1][2][3]
↑Segawa H, T Iwata Y, Yamamuro T, Kuwayama K, Tsujikawa K, Kanamori T, Inoue H (March 2017). "Differentiation of ring-substituted regioisomers of amphetamine and methamphetamine by supercritical fluid chromatography". Drug Testing and Analysis. 9 (3): 389–398. doi:10.1002/dta.2040. PMID27383263.