Clinical data
ATC code none
CAS Number 434-43-5 YesY
PubChem (CID) 22031
ChemSpider 20703 N
ECHA InfoCard 100.006.458
Chemical and physical data
Formula C11H17N
Molar mass 163.259 g/mol
3D model (Jmol) Interactive image
 NYesY (what is this?)  (verify)

Pentorex (Modatrop), also known as phenpentermine or α,β-dimethylamphetamine, is a stimulant drug related to phentermine which is used as an anorectic to assist with weight loss.[1][2] It also acts as a diuretic.[3] Pentorex was developed by Nordmark in the 1960s.[4]


  1. Behrendt, W. A.; Deininger, R. (1963). "On the Pharmacology of 2-Phenyl-3-methyl-3-aminobutane, a Substance with Anorexic Properties". Arzneimittelforschung (in German). 13 (8): 711–716. PMID 14090434.
  2. Opitz, K.; Kemper, F.; Loeser, A. (1965). "Comparative Study of the Anorexigenic Potency of some Appetite Depressants". Arzneimittelforschung (in German). 15 (3): 278–281. PMID 5897218.
  3. Opitz, K. (1965). "[Natriuretic and Diuretic Effect of Appetite Depressant Amphetamine Derivatives]". Klinische Wochenschrift (in German). 43 (4): 225–227. doi:10.1007/BF02350860. ISSN 0023-2173. PMID 14265209.
  4. GB patent 995063, "A Substituted Butylamine and Salts thereof", issued 1965-06-10, assigned to Nordmark

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