08108
(−)-Epigallocatechin
analytical standard
Synonym(s):
(−)-cis-2-(3,4,5-Trihydroxyphenyl)-3,4-dihydro-1(2H)-benzopyran-3,5,7-triol, (−)-cis-3,3′,4′,5,5′,7-Hexahydroxyflavane
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About This Item
Empirical Formula (Hill Notation):
C15H14O7
CAS Number:
Molecular Weight:
306.27
NACRES:
NA.24
PubChem Substance ID:
UNSPSC Code:
85151701
MDL number:
grade
analytical standard
Quality Segment
assay
≥90% (HPLC)
technique(s)
HPLC: suitable, gas chromatography (GC): suitable
application(s)
food and beverages
format
neat
SMILES string
O[C@@H]1Cc2c(O)cc(O)cc2O[C@@H]1c3cc(O)c(O)c(O)c3
InChI
1S/C15H14O7/c16-7-3-9(17)8-5-12(20)15(22-13(8)4-7)6-1-10(18)14(21)11(19)2-6/h1-4,12,15-21H,5H2/t12-,15-/m1/s1
InChI key
XMOCLSLCDHWDHP-IUODEOHRSA-N
General description
(−)-Epigallocatechin (EGC) belongs to the tea catechins group of polyphenols.
Application
EGC may be used as an analytical standard for the determination of EGC in:
- Fruit juices by high-performance liquid chromatography with diode array detection (HPLC-DAD) combined with electrospray ionization (ESI) and triple quadrupole mass spectrometry.
- Green tea standard reference materials (SRMs) by LC coupled with particle beam/electron ionization mass spectrometry (LC-PB/EIMS).
- Tea extracts by HPLC with electrochemical detection (ECD) and in plant-based foods by HPLC-DAD.
Biochem/physiol Actions
Green tea polyphenol. Anticancer agent. Lower antioxidant activity than EGCG.
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Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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