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Ball-and-stick model of the flephedrone molecule
Systematic (IUPAC) name
Clinical data
Legal status
Routes of
CAS Number 7589-35-7 YesY
ChemSpider 21477355 YesY
Chemical data
Formula C10H12FNO
Molar mass 181.206 g/mol
Chirality 1 : 1 mixture (racemate)

Flephedrone, also known as 4-fluoromethcathinone (4-FMC), is a stimulant drug of the cathinone chemical class.


Flephedrone started to be sold as a designer drug in 2008.[2][3]


Flephedrone has only a short history of human use and its toxicity is not well established.[4]


Flephedrone has been illegal in Denmark since December 2008.[citation needed]

Flephedrone has been illegal in the UK since April 2010.

Flephedrone has been illegal in the Lithuania since April 2010.

Flephedrone is most likely illegal in Australia as an analogue or derivative of cathinone.

Flephedrone has been illegal in Poland since April 2010.[5]

Flephedrone has been classed as a narcotic in Sweden since October 2010.[6]

In the United States, flephedrone is temporarily listed as a Schedule I controlled substance.[1] It is permanently listed as a Schedule I controlled substance in Florida,[7] Georgia, and Pennsylvania.[8]

As of October 2015 4-FMC is a controlled substance in China.[9]

See also[edit]