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Stereo, Kekulé, skeletal formula of levoamphetamine
CAS number 156-34-3 YesY
PubChem 32893
ChemSpider 30477 YesY
EC number 205-850-8
ChEBI CHEBI:42724 YesY
Beilstein Reference 2432739
Gmelin Reference 1125855
Jmol-3D images Image 1
Image 2
Molecular formula C9H13N
Molar mass 135.21 g mol−1
log P 1.789
Routes of
Legal status


Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Levoamphetamine (also levamfetamine (INN), (R)-amphetamine or (−)-amphetamine) is a psychostimulant known to increase wakefulness and concentration in association with decreased appetite and fatigue. Levoamphetamine is the levorotatory stereoisomer of the amphetamine molecule.


Levoamphetamine is the levorotary stereoisomer of the amphetamine molecule. Racemic amphetamine contains two optical isomers, dextroamphetamine and levoamphetamine.[2]



Adderall (nonproprietary name: dextroamphetamine sulfate, dextroamphetamine saccharate, amphetamine sulfate and amphetamine aspartate)[3] is an amphetamine pharmaceutical that contains 25% levoamphetamine salts and 75% dextroamphetamine salts.[2]


Benzedrine was a racemic (equal parts) mixture of dextroamphetamine and levoamphetamine introduced in the United States as an inhaler in 1934 for nasal decongestion.[4] It was later discovered that amphetamine could treat narcolepsy and ADHD.[4]

See also[edit]


  1. ^ "Amphetamine - PubChem Public Chemical Project". The PubChem Project. USA: National Center for Biotechnology Information. 8 August 2005. Descriptors Computed from Structure. Retrieved 26 September 2011. 
  2. ^ a b "Adderall XR Prescribing Information". United States Food and Drug Administration. December 2013. Retrieved 30 December 2013. 
  3. ^ "National Drug Code Amphetamine Search Results". National Drug Code Directory. United States Food and Drug Administration. Archived from the original on 7 February 2014. Retrieved 16 December 2013. 
  4. ^ a b Heal DJ, Smith SL, Gosden J, Nutt DJ (June 2013). "Amphetamine, past and present – a pharmacological and clinical perspective". J. Psychopharmacol. 27 (6): 479–496. doi:10.1177/0269881113482532. PMC 3666194. PMID 23539642.