Cathinones are differentiated by their ketone substitution about the beta carbon of the amphetamine skeleton, that means they are ?-keto-amphetamines. three-MMC has two methyl substitutions on its cathinone skeleton, 1 at R3 with the phenyl ring, and a second with the nitrogen team RN.Mephedrone. "Not for human use. For complex use only. Purity: 99… Read More