Clinical data
Other namesβ-Methylamphetamine
  • 3-Phenylbutan-2-amine
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Molar mass149.237 g·mol−1
3D model (JSmol)
  • C1(=CC=CC=C1)C(C)C(C)N
  • InChI=1/C10H15N/c1-8(9(2)11)10-6-4-3-5-7-10/h3-9H,11H2,1-2H3

2-Phenyl-3-aminobutane (also known as β-methylamphetamine) is a stimulant of the phenethylamine class that is closely related to its α-methyl analog Pentorex.[1] It was first synthesized by the German scientists Felix Haffner and Fritz Sommer in 1939 as a stimulant with milder effects, shorter duration, lower toxicity and fewer side effects compared to previously known drugs such as amphetamine.[2]

2-Phenyl-3-aminobutane is banned in some countries as a structural isomer of methamphetamine.

See also


  1. ^ Ledgard J (2007). A Laboratory History of Narcotics. Vol. 1: Amphetamines and Derivatives. Lulu.com. p. 81. ISBN 978-0-615-15694-1.
  2. ^ Haffner F, Sommer F (22 August 1944). "Patent US 2356582 A - Stimulants suitable for combating symptoms of fatigue and process for their production". Retrieved 25 July 2015.