2-Phenyl-3-aminobutane

2-Phenyl-3-aminobutane
Clinical data
Other names	β-Methylamphetamine; α,β-Dimethylphenethylamine; α,β-Dimethyl-2-phenylethylamine
Legal status
Legal status	CA: Schedule 1; US: Schedule II (isomer of Methamphetamine);
Identifiers
	IUPAC name 3-Phenylbutan-2-amine;
CAS Number	21906-17-2;
PubChem CID	210912;
ChemSpider	182828;
CompTox Dashboard (EPA)	DTXSID50944501 ;
Chemical and physical data
Formula	C10H15N
Molar mass	149.237 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES C1(=CC=CC=C1)C(C)C(C)N;
	InChI InChI=1/C10H15N/c1-8(9(2)11)10-6-4-3-5-7-10/h3-9H,11H2,1-2H3; Key:BKRHEVJTTWAYFJ-UHFFFAOYSA-N;

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