Record Information
Version1.0
Creation Date2018-07-17 17:47:21 UTC
Update Date2020-03-13 17:36:38 UTC
BMDB IDBMDB0062537
Secondary Accession Numbers
  • BMDB62537
Metabolite Identification
Common NameN(5)-ethyl-L-glutamine
DescriptionL-Theanine belongs to the class of organic compounds known as glutamine and derivatives. Glutamine and derivatives are compounds containing glutamine or a derivative thereof resulting from reaction of glutamine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. L-Theanine exists as a solid, possibly soluble (in water), and a very strong basic compound (based on its pKa) molecule. L-Theanine exists in all living organisms, ranging from bacteria to humans.
Structure
Thumb
Synonyms
ValueSource
N5-Ethyl-L-glutamineChEBI
gamma-GlutamylethylamideHMDB
Theanine, (D)-isomerHMDB
L-Glutamic acid-gamma-ethylamideHMDB
Theanine, (DL)-isomerHMDB
delta-GlutamylethylamideHMDB
Theanine, (L)-isomerHMDB
(+)-TheanineHMDB
L-gamma-GlutamylethylamideHMDB
L-Γ-glutamylethylamideHMDB
N-gamma-Ethyl-L-glutamineHMDB
N-Γ-ethyl-L-glutamineHMDB
Nγ-ethyl-L-glutamineHMDB
SuntheanineHMDB
TheaninHMDB
N(5)-Ethyl-L-glutamineHMDB
TheanineHMDB
L-TheanineChEBI
Chemical FormulaC7H14N2O3
Average Molecular Weight174.1977
Monoisotopic Molecular Weight174.100442324
IUPAC Name(2S)-2-amino-4-(ethylcarbamoyl)butanoic acid
Traditional Nametheanine
CAS Registry Number3081-61-6
SMILES
[H][C@](N)(CCC(O)=NCC)C(O)=O
InChI Identifier
InChI=1S/C7H14N2O3/c1-2-9-6(10)4-3-5(8)7(11)12/h5H,2-4,8H2,1H3,(H,9,10)(H,11,12)/t5-/m0/s1
InChI KeyDATAGRPVKZEWHA-YFKPBYRVSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as glutamine and derivatives. Glutamine and derivatives are compounds containing glutamine or a derivative thereof resulting from reaction of glutamine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentGlutamine and derivatives
Alternative Parents
Substituents
  • Glutamine or derivatives
  • Alpha-amino acid
  • L-alpha-amino acid
  • Fatty amide
  • N-acyl-amine
  • Fatty acid
  • Fatty acyl
  • Carboxamide group
  • Secondary carboxylic acid amide
  • Amino acid
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Organic nitrogen compound
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Organopnictogen compound
  • Primary aliphatic amine
  • Organic oxygen compound
  • Carbonyl group
  • Organic oxide
  • Amine
  • Hydrocarbon derivative
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
StatusDetected but not Quantified
OriginNot Available
BiofunctionNot Available
ApplicationNot Available
Cellular locationsNot Available
Physical Properties
StateNot Available
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water Solubility4.25e+00 g/lALOGPS
LogP-2.52ALOGPS
Predicted Properties
PropertyValueSource
logP-2.5ALOGPS
logP-3.4ChemAxon
logS-1.6ALOGPS
pKa (Strongest Acidic)2.35ChemAxon
pKa (Strongest Basic)9.31ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area92.42 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity42.76 m³·mol⁻¹ChemAxon
Polarizability17.89 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
GC-MSGC-MS Spectrum - GC-MS (3 TMS)splash10-05ai-1910000000-036caaf79935b62dafb8View in MoNA
GC-MSGC-MS Spectrum - GC-MS (2 TMS)splash10-0ik9-2920000000-b4175a19d175fc2dfaabView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-054o-9200000000-ad824a92c4a91b92d3beView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (2 TMS) - 70eV, Positivesplash10-0kmr-9420000000-fd2f30cc6e3beb84fc83View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableView in JSpectraViewer
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-00di-0900000000-5d75f1c18d21692a3a7aView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0a4i-1900000000-30f94d8454c885920222View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-001i-9300000000-533425b383afd6ea8b10View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0089-9000000000-cd51416fce1d90ca5a32View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-001l-9000000000-d11379cff212e4305279View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , positivesplash10-0a59-4900000000-233828d22b124785b538View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , positivesplash10-001i-9100000000-c68d3e3853f38b6441ebView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , positivesplash10-001i-9000000000-1d437318f6185e9abed1View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , positivesplash10-053r-9000000000-f98a061445440bd8d92fView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 35V, Negativesplash10-0pi9-4900000000-bc5d761afc2906c70f9aView in MoNA
LC-MS/MSLC-MS/MS Spectrum - 35V, Positivesplash10-001i-9400000000-a38f88002cc84f835dbfView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-002f-7900000000-700a74673280513b750aView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0006-9300000000-c05118c6382a21ee49c6View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0006-9000000000-5900d952e786b1c37b5cView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-00di-1900000000-ba1082ef889273ac4decView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-05i3-4900000000-74c4e555cb1b6dd5de58View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9100000000-854bf36c0c647d7b14a4View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0bt9-0900000000-8ab94ce283e2c855565cView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-05fr-4900000000-f58dee8213166ad39be4View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9000000000-ead54ac3cc631ccf43b3View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-004i-3900000000-6f8b15731e34783f4301View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-001i-9300000000-1c6627be4cfa6191919aView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0a59-9100000000-20b79ebdc4f84490ec0fView in MoNA
1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)Not AvailableView in JSpectraViewer
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Milk
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
MilkDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
Abnormal Concentrations
Not Available
HMDB IDHMDB0034365
DrugBank IDDB12444
Phenol Explorer Compound IDNot Available
FooDB IDFDB012738
KNApSAcK IDC00030691
Chemspider ID388498
KEGG Compound IDC01047
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkL-theanine
METLIN IDNot Available
PubChem Compound439378
PDB IDNot Available
ChEBI ID17394
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Hagi T, Kobayashi M, Nomura M: Metabolome analysis of milk fermented by gamma-aminobutyric acid-producing Lactococcus lactis. J Dairy Sci. 2016 Feb;99(2):994-1001. doi: 10.3168/jds.2015-9945. Epub 2015 Dec 10. [PubMed:26686724 ]