Exactly what is 3,four-DMMC?3,4-DMMC, often called three,4-Dimethylmethcathinone, is usually a synthetic stimulant belonging on the cathinone spouse and children. Cathinones are psychoactive substances that have results much like amphetamines, and three,four-DMMC is no exception. It shares structural similarities with mephedrone (four-MMC), another