Cathinones are differentiated by their ketone substitution about the beta carbon of the amphetamine skeleton, which means They're ?-keto-amphetamines. 3-MMC has two methyl substitutions on its cathinone skeleton, a person at R3 from the phenyl ring, plus a 2nd at the nitrogen group RN.The effects of 3-MMC are just like People of copyright (ecstasy)