What is three,4-DMMC?three,four-DMMC, often known as 3,four-Dimethylmethcathinone, can be a synthetic stimulant belonging into the cathinone household. Cathinones are psychoactive substances which have effects just like amphetamines, and three,4-DMMC isn't any exception. It shares structural similarities with mephedrone (4-MMC), another effectively