L-Phenylalanine

L-Phenylalanine is an organic compound with the molecular formula C9H11NO2.

Formula
C9H11NO2
Functional group
Amino acids
Molar mass
165.19 g/mol
Also known as
(2S)-2-amino-3-phenylpropanoic acid, phenylalanine, (S)-2-Amino-3-phenylpropanoic acid, 3-Phenyl-L-alanine, (S)-Phenylalanine, (L)-Phenylalanine

Overview

L-Phenylalanine is an organic compound with the molecular formula C9H11NO2.

Identifiers

Formula
C9H11NO2
Functional group
Amino acids
Molar mass
165.19 g/mol
Also known as
(2S)-2-amino-3-phenylpropanoic acid, phenylalanine, (S)-2-Amino-3-phenylpropanoic acid, 3-Phenyl-L-alanine, (S)-Phenylalanine, (L)-Phenylalanine
Chemical identifiers
SMILES
C1=CC=C(C=C1)C[C@@H](C(=O)O)N
InChI
InChI=1S/C9H11NO2/c10-8(9(11)12)6-7-4-2-1-3-5-7/h1-5,8H,6,10H2,(H,11,12)/t8-/m0/s1
PubChem CID
6140

Properties

Melting / decomposition
283 °C decomposes
Sublimation
563 °F at 760 mmHg (sublimes) (NTP, 1992)
Water solubility
In water, 2.64X10+4 mg/L at 25 °C
Data availability

Not published: Density.

Related compounds

References

  1. PubChem Compound Summary: L-Phenylalanine (CID 6140)National Center for Biotechnology Information · PubChem

    Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.

  2. Hazardous Substances Data Bank (HSDB): L-Phenylalanine — melting pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/6140#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Lide, D.R. CRC Handbook of Chemistry and Physics 88TH Edition 2007-2008. CRC Press, Taylor & Francis, Boca Raton, FL 2007, p. 3-424

  3. CAMEO Chemicals: L-Phenylalanine — boiling pointCAMEO Chemicals

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/6140#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina.

  4. Hazardous Substances Data Bank (HSDB): L-Phenylalanine — solubilityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/6140#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Yalkowsky, S.H., He, Yan., Handbook of Aqueous Solubility Data: An Extensive Compilation of Aqueous Solubility Data for Organic Compounds Extracted from the AQUASOL dATAbASE. CRC Press LLC, Boca Raton, FL. 2003., p. 578