Description

(-)-Gallocatechin-3-Gallate CAS NO 5127-64-0 is a specific stereoisomer of a polyphenolic catechin, a key bioactive compound found in green tea and other plants. This high-purity standard is essential for research and development in nutraceuticals and pharmaceuticals, where precise molecular identity and activity are critical. It is primarily sought by manufacturers and researchers in the dietary supplement, cosmetic, and life science industries for its potent antioxidant and potential therapeutic properties.

Application

• Dietary Supplement Formulation: Used as a key active ingredient in high-end nutraceuticals and antioxidant supplements.
• Pharmaceutical Reference Standard: Serves as a certified reference material (CRM) for analytical method development, validation, and quality control of related products.
• Cosmetic & Skincare Actives: Incorporated into anti-aging, protective, and reparative skincare formulations for its antioxidant and anti-inflammatory benefits.
• Biochemical & Life Science Research: Employed in in vitro and in vivo studies to investigate mechanisms of action related to oxidative stress, cellular signaling, and metabolic health.
• Functional Food & Beverage Fortification: Added to enhance the bioactive profile of health-focused food and drink products.
• Natural Product Isolation & Standardization: Acts as a benchmark for the quantification and standardization of catechins in botanical extracts.

Basic Information

Product Name	(-)-Gallocatechin-3-Gallate
CAS No.	5127-64-0
Molecular Formula	C22H18O11
Molecular Weight	458.37 g/mol
Synonyms	(-)-GCG; Gallocatechin gallate; 3-O-Galloyl-(-)-gallocatechin; (-)-Gallocatechin 3-gallate; GCG; 2-(3,4,5-Trihydroxyphenyl)-3,4-dihydro-1(2H)-benzopyran-3,5,7-triol 3-(3,4,5-trihydroxybenzoate); Epigallocatechin gallate isomer; Tea catechin GCG
EINECS	Contact for details

Quality Control

Our (-)-Gallocatechin-3-Gallate is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation (IR, UV), to ensure it meets stringent specifications for research and commercial use. A Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C under inert atmosphere for long-term stability, as the compound is easily oxidized and light-sensitive. Allow the container to reach room temperature before opening to minimize moisture condensation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to structure
Assay (HPLC)	≥95.0%
Water Content (KF)	≤5.0%
Residue on Ignition	≤0.5%
Heavy Metals (as Pb)	≤20 ppm
Solvent Residues (GC)	Meets ICH guidelines

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