Chemical Component Summary

Identifiers(2S)-2-amino-3-phenyl-propanoic acid
FormulaC9 H11 N O2
Molecular Weight165.19
Isomeric SMILESN[C@@H](Cc1ccccc1)C(O)=O

Chemical Details

Formal Charge0
Atom Count46
Chiral Atom Count1
Chiral AtomsCA
Bond Count23
Aromatic Bond Count6
Leaving AtomsOXT, H2, HXT

Drug Info: DrugBank

DrugBank IDDB00120 Different stereochemistry
  • approved
  • nutraceutical
DescriptionAn essential aromatic amino acid that is a precursor of melanin; dopamine; noradrenalin (norepinephrine), and thyroxine. [PubChem]
  • (S)-2-Amino-3-phenylpropionic acid
  • (S)-alpha-Amino-beta-phenylpropionic acid
  • 3-phenyl-L-alanine
  • beta-Phenyl-L-alanine
  • F
  • L-Phenylalanine hydrochloride
  • Phenylalanine sodium
Brand Names
  • Aminosyn
  • Aminosyn 10%
  • Aminosyn 10% W Electrolytes
  • Aminosyn 3.5% M
  • Aminosyn 5%
Affected OrganismHumans and other mammals
IndicationL-phenylalanine may be helpful in some with depression. It may also be useful in the treatment of vitiligo. There is some evidence that L-phenylalanine may exacerbate tardive dyskinesia in some schizophrenic patients and in some who have used neuroleptic drugs.
PharmacologyUsed by the brain to produce Norepinephrine, a chemical that transmits signals between nerve cells and the brain; keeps you awake and alert; reduces hunger pains; functions as an antidepressant and helps improve memory.
Mechanism of actionThe mechanism of L-phenylalanine's putative antidepressant activity may be accounted for by its precursor role in the synthesis of the neurotransmitters norepinephrine and dopamine. Elevated brain norepinephrine and dopamine levels are thought to be associated with antidepressant effects. <br/>The mechanism of L-phenylalanine's possible antivitiligo activity is not well understood. It is thought that L-phenylalanine may stimulate the production of melanin in the affected skin
Route of administrationIntravenous
  • Amino Acids
  • Amino Acids, Aromatic
  • Amino Acids, Cyclic
  • Amino Acids, Essential
  • Amino Acids, Peptides, and Proteins
CAS number63-91-2
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682