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Legal status
Legal status
CAS Number
Chemical and physical data
Molar mass205.301 g·mol−1
3D model (JSmol)

4-Methylpentedrone (also known as 4-MPD and 4-Methyl-α-methylamino-valerophenone), is a stimulant drug of the cathinone class that has been sold online as a designer drug.[1] It is a higher homolog of 4-methylmethcathinone (mephedrone) and 4-methylbuphedrone (4-MeMABP), and the p-methyl derivative of pentedrone. It can also be viewed as the methylamino analog of pyrovalerone.

A related compound, 4-methyl-α-ethylaminopentiophenone (4-MEAP), has been found to be incorrectly sold as 4-methylpentedrone.[2][3]

See also[edit]


  1. ^ "4-Methylpentedrone". Cayman Chemical. Retrieved 28 June 2015.
  2. ^ Danielle Hamby M.Sc; Annessa Burnett B.S; Michael Jablonsky Ph.D; Brendan Twamley Ph.D; Pierce V. Kavanagh Ph.D; Elizabeth A. Gardner Ph.D (May 2015). "Identification of 2-(ethylamino)-1-(4-methylphenyl)-1-pentanone (4-MEAP), a New "Legal High" Sold by an Internet Vendor as 4-Methyl Pentedrone". Journal of Forensic Sciences. 60 (3): 721–726. doi:10.1111/1556-4029.12712. PMID 25923458.
  3. ^ Nahoko Uchiya; Satoru Matsuda; Maiko Kawamura; Yoshihiko Shimokawa; Ruri Kikura-Hanajiri; Kosuke Aritake; Yoshihiro Urade; Yukihiro Goda (October 2014). "Characterization of four new designer drugs, 5-chloro-NNEI, NNEI indazole analog, α-PHPP and α-POP, with 11 newly distributed designer drugs in illegal products". Forensic Science International. 243: 1–13. doi:10.1016/j.forsciint.2014.03.013. PMID 24769262.