Description

(-)-β,3,4-Trihydroxybenzenepentanoic Acid 2-(3,4-Dihydroxyphenyl)-3,4-Dihydro-5,7-Dihydroxy-2H-1-Benzopyran-3-Yl Ester CAS NO 98570-83-3 is a complex polyphenolic ester compound, a derivative of gallic acid and a flavan-3-ol, known for its potent antioxidant properties. This high-purity chemical is critical for research and development in advanced material science and life sciences, where precise molecular structure and activity are paramount. It serves as a valuable reference standard and building block for pharmaceutical, nutraceutical, and cosmetic innovators seeking to harness natural antioxidant mechanisms.

Application

• Pharmaceutical Reference Standard: Used for the identification, assay, and purity testing of complex polyphenolic compounds in drug development and quality control laboratories.
• Nutraceutical & Functional Food Research: Investigated as a key active ingredient or biomarker in studies related to antioxidant capacity, metabolic health, and natural product efficacy.
• Cosmeceutical Formulation: Serves as a high-value active component in advanced skincare and anti-aging products targeting oxidative stress and free radical damage.
• Biochemical Research: Employed in enzymatic studies, receptor binding assays, and as a probe to study antioxidant pathways and cellular protection mechanisms.
• Material Science: Explored for its potential in creating novel polymers or coatings with inherent antioxidant or UV-stabilizing properties.
• Analytical Chemistry: Utilized as a critical calibration standard in HPLC, LC-MS, and other chromatographic methods for quantifying related polyphenols in complex matrices.

Basic Information

Item	Detail
Product Name	(-)-β,3,4-Trihydroxybenzenepentanoic Acid 2-(3,4-Dihydroxyphenyl)-3,4-Dihydro-5,7-Dihydroxy-2H-1-Benzopyran-3-Yl Ester
CAS No.	98570-83-3
Molecular Formula	C26H24O12
Molecular Weight	528.46 g/mol
Synonyms	(-)-Epicatechin 3-O-gallate; ECG; Epicatechin gallate; L-Epicatechin gallate; (-)-Epicatechin-3-gallate; 2-(3,4-Dihydroxyphenyl)-3,4-dihydro-5,7-dihydroxy-2H-1-benzopyran-3-yl 3,4,5-trihydroxybenzenepentanoate; Epigallocatechin gallate analog; Flavan-3-ol gallate ester
EINECS	Contact for details

Quality Control

Our (-)-β,3,4-Trihydroxybenzenepentanoic Acid 2-(3,4-Dihydroxyphenyl)-3,4-Dihydro-5,7-Dihydroxy-2H-1-Benzopyran-3-Yl Ester is produced and handled under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and development applications. Certificates of Analysis (COA) detailing specific batch results 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 a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, prolonged storage is recommended under an inert atmosphere such as nitrogen or argon. Keep the container tightly sealed in a dry environment to minimize exposure to moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%

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