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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2006-05-22 15:12:36 UTC
Update Date2022-03-07 02:49:17 UTC
HMDB IDHMDB0003153
Secondary Accession Numbers
  • HMDB03153
Metabolite Identification
Common NameEpigallocatechin gallate
DescriptionEpigallocatechin gallate (EGCG) is the principal catechin in tea from Camellia sinensis, the most consumed beverage worldwide (after water). Depending on brew time and temperature, a single cup of green tea may contain 100-200 mg EGCG. To control the dose of EGCG administered in experimental studies, green tea solids (GTS) or capsules of green tea extract standardized to EGCG content are often employed. However, there is considerable variability in the EGCG content of commercially available dietary supplements, ranging from 12-143% of the tablet or capsule weight. While standardizing tea preparations to EGCG or using highly purified EGCG for research presents an important strategy for the conduct of precise studies as well as the ability to replicate experiments, it is worth noting this approach limits the potential contributions and possible synergy with other bioactive tea ingredients, including caffeine and other flavonoids. Human studies of the bioavailability of green tea catechins reveal these compounds to be poorly absorbed, with <0.1% of ingested catechins appearing in blood. Most ingested EGCG is rapidly cleared from blood with an elimination half-life of {approx}3 h and preferentially excreted via bile to the colon. The growing interest in the role of EGCG in health promotion and disease prevention is reflected by an exponential growth of research publications in this field. (J Am Coll Nutr. 2007 Aug;26(4):362S-365S).
Structure
Data?1582752264
Synonyms
Chemical FormulaC22H18O11
Average Molecular Weight458.3717
Monoisotopic Molecular Weight458.084911418
IUPAC Name(2R,3R)-5,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-3,4-dihydro-2H-1-benzopyran-3-yl 3,4,5-trihydroxybenzoate
Traditional Name(-)-epigallocatechin gallate
CAS Registry Number989-51-5
SMILES
[H][C@]1(CC2=C(O)C=C(O)C=C2O[C@]1([H])C1=CC(O)=C(O)C(O)=C1)OC(=O)C1=CC(O)=C(O)C(O)=C1
InChI Identifier
InChI=1S/C22H18O11/c23-10-5-12(24)11-7-18(33-22(31)9-3-15(27)20(30)16(28)4-9)21(32-17(11)6-10)8-1-13(25)19(29)14(26)2-8/h1-6,18,21,23-30H,7H2/t18-,21-/m1/s1
InChI KeyWMBWREPUVVBILR-WIYYLYMNSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as catechin gallates. These are organic compounds containing a gallate moiety glycosidically linked to a catechin.
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
ClassFlavonoids
Sub ClassFlavans
Direct ParentCatechin gallates
Alternative Parents
Substituents
  • Catechin gallate
  • Epigallocatechin
  • 3'-hydroxyflavonoid
  • 4'-hydroxyflavonoid
  • 5-hydroxyflavonoid
  • 7-hydroxyflavonoid
  • Hydroxyflavonoid
  • Galloyl ester
  • Gallic acid or derivatives
  • P-hydroxybenzoic acid alkyl ester
  • M-hydroxybenzoic acid ester
  • P-hydroxybenzoic acid ester
  • Benzoate ester
  • Chromane
  • Benzopyran
  • 1-benzopyran
  • Pyrogallol derivative
  • Benzenetriol
  • Benzoic acid or derivatives
  • Benzoyl
  • Alkyl aryl ether
  • 1-hydroxy-4-unsubstituted benzenoid
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Benzenoid
  • Monocyclic benzene moiety
  • Carboxylic acid ester
  • Carboxylic acid derivative
  • Polyol
  • Oxacycle
  • Ether
  • Organoheterocyclic compound
  • Monocarboxylic acid or derivatives
  • Organic oxide
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Organooxygen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Physiological effect
Disposition
Biological locationSource
ProcessNot Available
Role
Industrial applicationBiological role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point140 - 142 °CNot Available
Boiling Point909.00 to 910.00 °C. @ 760.00 mm Hg (est)The Good Scents Company Information System
Water Solubility32.77 mg/L @ 25 °C (est)The Good Scents Company Information System
LogP0.639 (est)The Good Scents Company Information System
Experimental Chromatographic Properties

Experimental Collision Cross Sections

Adduct TypeData SourceCCS Value (Å2)Reference
[M+H]+Not Available206.134http://allccs.zhulab.cn/database/detail?ID=AllCCS00001418
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular Locations
  • Membrane (predicted from logP)
Biospecimen Locations
  • Blood
  • Urine
Tissue Locations
  • Bladder
  • Epidermis
  • Fibroblasts
  • Kidney
  • Liver
  • Neuron
  • Platelet
  • Prostate
  • Skeletal Muscle
Pathways
Normal Concentrations
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB12116
Phenol Explorer Compound ID129
FooDB IDFDB093704
KNApSAcK IDC00000958
Chemspider ID58575
KEGG Compound IDC09731
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkEpigallocatechin_gallate
METLIN ID3550
PubChem Compound65064
PDB IDNot Available
ChEBI ID4806
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDrw1654041
References
Synthesis ReferenceLiang, Huiling; Liang, Yuerong; Dong, Junjie; Lu, Jianliang. Tea extraction methods in relation to control of epimerization of tea catechins. Journal of the Science of Food and Agriculture (2007), 87(9), 1748-1752.
Material Safety Data Sheet (MSDS)Download (PDF)
General References