Description

(-)-Epigallocatechin Gallate CAS NO 989-51-5 is a potent polyphenolic catechin and the primary bioactive component found in green tea. This compound is highly valued for its significant antioxidant and bioactive properties, making it a critical ingredient for advanced research and product development. It is essential for manufacturers and researchers in the nutraceutical, pharmaceutical, and cosmetic industries seeking high-purity, standardized actives.

Application

• Nutraceutical & Dietary Supplements: A key active ingredient in formulations targeting antioxidant support, metabolic health, and cellular protection.
• Pharmaceutical Research: Used as a reference standard and active pharmaceutical ingredient (API) in preclinical and clinical studies for its potential therapeutic effects.
• Cosmetics & Skincare: Incorporated into anti-aging, protective, and revitalizing serums and creams for its antioxidant and anti-inflammatory benefits.
• Functional Food & Beverages: Used to fortify health drinks, teas, and food products to enhance their bioactive profile.
• Biochemical Research: Serves as a crucial reagent in studies of signal transduction, apoptosis, and oxidative stress pathways.
• Standardization & Quality Control: Employed as a primary standard for the assay and quality control of green tea extracts and related products.

Basic Information

Product Name	(-)-Epigallocatechin Gallate
CAS No.	989-51-5
Molecular Formula	C22H18O11
Molecular Weight	458.37 g/mol
Synonyms	EGCG; (-)-Epigallocatechin-3-gallate; L-Epicatechin, 3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-3,4-dihydro-1(2H)-benzopyran-3-yl 3,4,5-trihydroxybenzoate; Epigallocatechin gallate; NSC 141136; Tea catechin; Green tea catechin; 2R,3R-2-(3,4,5-Trihydroxyphenyl)-3,4-dihydro-1(2H)-benzopyran-3,5,7-triol 3-(3,4,5-trihydroxybenzoate)
EINECS	213-577-9

Quality Control

Our (-)-Epigallocatechin Gallate is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets stringent specifications for research and commercial use. Certificates of Analysis (COA) documenting purity, residual solvents, and heavy metals are available upon request to support your regulatory and quality assurance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C under an inert atmosphere for long-term stability. This product is easily oxidized and light-sensitive; prolonged exposure to air, light, or elevated temperatures should be avoided to maintain potency and purity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Identification (HPLC)	Conforms to reference standard
Assay (HPLC)	≥95.0%
Loss on Drying	≤2.0%
Residue on Ignition	≤0.5%
Heavy Metals (as Pb)	≤20 ppm
Residual Solvents (GC)	Meets ICH guidelines

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.