Best place to buy Mephedrone powder The best place to buy Mephedrone powder, also known as 4-methyl methcathinone (4-MMC) or 4-methyl ephedrone, is a synthetic stimulant drug of the amphetamine and cathinone classes. Slang names include bath salts, drone,  M-CAT, White Magic, and meow meow. It is chemically similar to the cathinone compounds found in the khat plant of eastern Africa. It comes