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Record Information
Version1.0
Creation Date2016-09-30 22:34:52 UTC
Update Date2020-06-04 20:08:18 UTC
MCDB ID BMDB0000684
Secondary Accession Numbers
  • BMDB00684
Metabolite Identification
Common NameL-Kynurenine
DescriptionL-Kynurenine, also known as quinurenine, belongs to the class of organic compounds known as alkyl-phenylketones. These are aromatic compounds containing a ketone substituted by one alkyl group, and a phenyl group. L-Kynurenine exists as a solid, possibly soluble (in water), and a very strong basic compound (based on its pKa) molecule. L-Kynurenine exists in all eukaryotes, ranging from yeast to humans. L-Kynurenine participates in a number of enzymatic reactions, within cattle. In particular, L-Kynurenine and formic acid can be biosynthesized from n'-formylkynurenine; which is mediated by the enzyme kynurenine formamidase. In addition, L-Kynurenine can be converted into 2-aminobenzoic acid and L-alanine through the action of the enzyme kynureninase. In cattle, L-kynurenine is involved in the metabolic pathway called the tryptophan metabolism pathway.
Structure
Thumb
Synonyms
ValueSource
(2S)-2-Amino-4-(2-aminophenyl)-4-oxobutanoic acidChEBI
3-Anthraniloyl-L-alanineChEBI
KYNURENINEChEBI
(2S)-2-Amino-4-(2-aminophenyl)-4-oxobutanoateGenerator
(S)-alpha,2-Diamino-3-hydroxy-gamma-oxo-benzenebutanoateHMDB
(S)-alpha,2-Diamino-3-hydroxy-gamma-oxo-benzenebutanoic acidHMDB
3-Anthraniloyl-alanineHMDB
3-AnthraniloylalanineHMDB
alpha,2-Diamino-gamma-oxo-benzenebutanoateHMDB
alpha,2-Diamino-gamma-oxo-benzenebutanoic acidHMDB
DL-KynurenineHMDB
KynureninHMDB
QuinurenineHMDB
L-KynurenineHMDB
3-(2-aminobenzoyl)-L-alanineHMDB
KYNAHMDB
Chemical FormulaC10H12N2O3
Average Molecular Weight208.2139
Monoisotopic Molecular Weight208.08479226
IUPAC Name(2S)-2-amino-4-(2-aminophenyl)-4-oxobutanoic acid
Traditional NameL-kynurenine
CAS Registry Number2922-83-0
SMILES
N[C@@H](CC(=O)C1=CC=CC=C1N)C(O)=O
InChI Identifier
InChI=1S/C10H12N2O3/c11-7-4-2-1-3-6(7)9(13)5-8(12)10(14)15/h1-4,8H,5,11-12H2,(H,14,15)/t8-/m0/s1
InChI KeyYGPSJZOEDVAXAB-QMMMGPOBSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as alkyl-phenylketones. These are aromatic compounds containing a ketone substituted by one alkyl group, and a phenyl group.
KingdomOrganic compounds
Super ClassOrganic oxygen compounds
ClassOrganooxygen compounds
Sub ClassCarbonyl compounds
Direct ParentAlkyl-phenylketones
Alternative Parents
Substituents
  • Alkyl-phenylketone
  • Butyrophenone
  • Alpha-amino acid
  • Alpha-amino acid or derivatives
  • L-alpha-amino acid
  • Benzoyl
  • Gamma-keto acid
  • Aniline or substituted anilines
  • Aryl alkyl ketone
  • Monocyclic benzene moiety
  • Beta-aminoketone
  • Keto acid
  • Benzenoid
  • Vinylogous amide
  • Amino acid
  • Amino acid or derivatives
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Primary aliphatic amine
  • Amine
  • Hydrocarbon derivative
  • Organopnictogen compound
  • Organic oxide
  • Organic nitrogen compound
  • Organonitrogen compound
  • Primary amine
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point191 °CNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP-1.9ALOGPS
logP-1.9ChemAxon
logS-2.1ALOGPS
pKa (Strongest Acidic)1.19ChemAxon
pKa (Strongest Basic)8.96ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area106.41 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity55.05 m³·mol⁻¹ChemAxon
Polarizability20.59 ųChemAxon
Number of Rings1ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Concentrations
StatusValueReferenceDetails
Detected but not QuantifiedNot Applicable details
Detected but not QuantifiedNot Applicable details
HMDB IDHMDB0000684
DrugBank IDDB02070
Phenol Explorer Compound IDNot Available
FoodDB IDFDB022181
KNApSAcK IDC00007604
Chemspider ID141580
KEGG Compound IDC00328
BioCyc IDCPD-14736
BiGG ID1445574
Wikipedia LinkKynurenine
METLIN ID72
PubChem Compound161166
PDB IDNot Available
ChEBI ID16946
References
Synthesis ReferenceHayaishi, Osamu. L-Kynurenine sulfate monohydrate. Biochemical Preparations (1953), 3 108-11.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Melzer N, Wittenburg D, Hartwig S, Jakubowski S, Kesting U, Willmitzer L, Lisec J, Reinsch N, Repsilber D: Investigating associations between milk metabolite profiles and milk traits of Holstein cows. J Dairy Sci. 2013 Mar;96(3):1521-34. doi: 10.3168/jds.2012-5743. [PubMed:23438684 ]
  2. Mung D, Li L: Development of Chemical Isotope Labeling LC-MS for Milk Metabolomics: Comprehensive and Quantitative Profiling of the Amine/Phenol Submetabolome. Anal Chem. 2017 Apr 18;89(8):4435-4443. doi: 10.1021/acs.analchem.6b03737. Epub 2017 Mar 28. [PubMed:28306241 ]
  3. Mung D, Li L: Applying quantitative metabolomics based on chemical isotope labeling LC-MS for detecting potential milk adulterant in human milk. Anal Chim Acta. 2018 Feb 25;1001:78-85. doi: 10.1016/j.aca.2017.11.019. Epub 2017 Nov 14. [PubMed:29291809 ]