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http://en.wikipedia.org/wiki/Mephedrone

Mephedrone (2-methylamino-1-p-tolylpropan-1-one),[3] also known as 4-methylmethcathinone (4-MMC), 4-methylephedrone, meow meow, [4] Miaow,[5], Cake or MMCAT[6], is a stimulant and entactogen drug of the phenethylamine, amphetamine, and cathinone chemical classes. It is reported to be contained in some legal highs

the psychonaut research project, an eu organisation that searches the internet for information regarding new drugs, first identified mephedrone in 2008. Their research suggests that the drug first became available in 2007.[6] mephedrone was first seized in france in may 2007 after police sent a tablet that they assumed to be ecstasy to be analysed.[8] the drug was used in early products, such as neodoves pills, by the legal high company neorganics,[9] but the range was discontinued in january 2008 after the government of israel, where the company is based, made mephedrone illegal. It has been reported to be sold as a designer drug,[10] but little is known about its pharmacology or toxicology as of yet. Mephedrone has recently been reported as having been sold as "ecstasy" in the australian city of cairns, along with ethylcathinone,[11][12][13] and has also been reported in europe and the united states.[14][15] it is reportedly currently manufactured in china.[16]