2-Methyl-MDA CAS # 691876-73-0 or 2-Methyl-3,4-methylenedioxyamphetamine (2-methyl-MDA) is an amphetamine-class entactogen and psychedelic substance. It serves as a selective serotonin releasing agent (SSRA) for serotonin , dopamine, and norepinephrine efflux, with IC50 values of 93nM, 12,000nM, and 1,937nM. 2-Methyl-MDA is more effective compared to MDA.