(-)-Epigallocatechin - CAS 970-74-1
Not Intended for Therapeutic Use. For research use only.
Product Name:
Catalog Number:
EGC; Epigallocatechin; l-Epigallocatechin; epi-Gallocatechin
CAS Number:
(-)-Epigallocatechin is the most abundant flavonoid in green tea. It is a major green tea polyphenol with antioxidant, anti-inflammatory, and anticancer activities. It can bind to unfolded native polypeptides and prevent conversion to amyloid fibrils. It is a potent inhibitor of amyloidogenic cystatin I66Q amyloid fibril formation in vitro. It prevents amyloidogenic cystatin fibril formation by stabilizing the molecule in its native-like state as opposed to redirecting aggregation to disordered, amorphous aggregates. It induced the formation of hydroxyl radicals in E. faecalis. It has been shown to scavenge DPPH radicals and prevent the growth of several different AML cell lines at micromolar concentrations.
Molecular Weight:
Molecular Formula:
Chemical Structure
CAS 970-74-1 (-)-Epigallocatechin

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Reference Reading

1.A-type dimeric epigallocatechin-3-gallate (EGCG) is a more potent inhibitor against the formation of insulin amyloid fibril than EGCG monomer.
Nie RZ1, Zhu W1, Peng JM1, Ge ZZ1, Li CM2. Biochimie. 2016 Apr 12. pii: S0300-9084(16)30038-4. doi: 10.1016/j.biochi.2016.03.011. [Epub ahead of print]
Because fibrillary protein aggregates is regarded to be closely associated with many diseases such as Alzheimer's disease, diabetes, and Parkinson's disease, growing interest and researches have been focused on finding potential fibrillation inhibitors. In the present study, the inhibitory effects of epigallocatechin-3-gallate (EGCG) and A-type dimeric epigallocatechin-3-gallate (A-type EGCG dimer) on the formation of insulin fibrillation were compared by multi-dimensional approaches including thioflavin-T (ThT) fluorescence assay, 1-anilinonaphthalene-8-sulfonic (ANS) fluorescence assay, dynamic light scattering (DLS), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy and circular dichroism (CD) spectroscopy. Our results confirmed that A-type EGCG dimer is a more potent inhibitor against the formation of bovine insulin amyloid fibril than EGCG. In addition, A-type EGCG dimer could not only inhibit insulin amyloid fibril formation, but also change the aggregation pathway and induce bovine insulin into amorphous aggregates.
2.Hypolipidemic effects of flavonoids extracted from Lomatogonium rotatum.
Bao L1, Hu L2, Zhang Y3, Wang YI1. Exp Ther Med. 2016 Apr;11(4):1417-1424. Epub 2016 Jan 29.
Contained in the Mongolian volumes of Chinese Materia Medica, Lomatogonium rotatum Fries ex Nym. may reduce blood lipid levels and prevent obesity; however, its exact mechanism of action remains unclear. The present study investigated the hypolipidemic and obesity-inhibiting effects of four similarly structured flavonoids extracted from L. rotatum. According to a well-established method, flavonoids such as decussatin were extracted from the whole herb of L. rotatum, and male Wistar rats were subsequently fed a high-fructose diet supplemented with flavonoids (20 mg/kg) for 12 weeks. The levels of total cholesterol, triglyceride (TG), low-density lipoprotein-cholesterol and high-density lipoprotein-cholesterol (HDL-C) were detected. In addition, hepatic and epididymal adipose tissues were weighed, and levels of blood glucose, alanine aminotransferase, aspartate aminotransferase, non-esterified fatty acid, insulin and leptin were determined.
3.Epigallocatechin-3-gallate ameliorates erectile function in aged rats via regulation of PRMT1/DDAH/ADMA/NOS metabolism pathway.
Chen D, Zhang KQ, Li B, Sun DQ, Zhang H, Fu Q1. Asian J Androl. 2016 Apr 15. doi: 10.4103/1008-682X.178486. [Epub ahead of print]
Aging-related ED is predominantly attributed to neurovascular dysfunction mediated by NO suppression and increased oxidative stress in penis. The alterations of protein arginine methyltransferases 1 (PRMT1)/dimethylarginine dimethylaminohydrolase (DDAH)/asymmetrical dimethylarginine (ADMA)/NO synthase (NOS) pathway regulate NO production in the vascular endothelium. Epigallocatechin-3-gallate (EGCG) is one of the most abundant and antioxidative ingredients isolated from green tea. In the present study, 40 Sprague-Dawley rats were randomly distributed into four groups: one young rat group and three aged rat groups treated with daily gavage feedings of EGCG at doses of 0, 10 mg kg-1 and 100 mg kg-1 for 12 weeks, respectively. Erectile function was assessed by electrical stimulation of the cavernous nerves with intracavernous pressure (ICP) measurement. After euthanasia, penile tissue was investigated using Western blot and ELISA to assess the PRMT1/DDAH/ADMA/NOS metabolism pathway.
4.Does supplementation with green tea extract improve acne in post-adolescent women? A randomized, double-blind, and placebo-controlled clinical trial.
Lu PH1, Hsu CH2. Complement Ther Med. 2016 Apr;25:159-63. doi: 10.1016/j.ctim.2016.03.004. Epub 2016 Mar 7.
BACKGROUND: Green tea is believed to have beneficial effects in the prevention and treatment of acne.