Description

Benzoic acid, 3,4,5-trihydroxy-, (2R,2'R,3R,3'S,4R)-2,2'-bis(3,4-dihydroxyphenyl)-3,3',4,4'-tetrahydro-3',5,5',7,7'-pentahydroxy[4,8'-bi-2H-1-benzopyran]-3-yl ester is a complex polyphenolic ester of significant interest in advanced chemical research and development. This compound matters for its unique structural framework, which is associated with potent antioxidant and bioactive properties. It is primarily needed by research institutions and manufacturers in the pharmaceutical, nutraceutical, and high-purity fine chemical sectors for developing novel therapeutic agents and functional ingredients.

Application

• Pharmaceutical Intermediate: Serves as a key building block or precursor in the synthesis of novel drug candidates, particularly those targeting oxidative stress-related pathways.
• Biochemical Research: Used as a reference standard or active probe in studies investigating antioxidant mechanisms, enzyme inhibition, and cellular signaling.
• Nutraceutical Formulation: Incorporated into advanced dietary supplements and functional food products for its potential bioactive benefits.
• Cosmeceutical Development: Applied in the research and formulation of high-end skincare products for its antioxidant and potential anti-aging properties.
• Fine Chemical Synthesis: Utilized as a specialized intermediate in the multi-step synthesis of complex natural product analogs and other high-value chemicals.

Basic Information

Product Name	Benzoic acid, 3,4,5-trihydroxy-, (2R,2'R,3R,3'S,4R)-2,2'-bis(3,4-dihydroxyphenyl)-3,3',4,4'-tetrahydro-3',5,5',7,7'-pentahydroxy[4,8'-bi-2H-1-benzopyran]-3-yl ester
CAS No.	79907-45-2
Molecular Formula	C₄₄H₃₂O₂₂
Molecular Weight	936.72 g/mol
Synonyms	Procyanidin B2 3,3''-Di-O-gallate; Procyanidin B2 digallate; 3,3''-Di-O-galloylprocyanidin B2; Epicatechin-(4β→8)-epicatechin-3,3''-di-O-gallate; [4,8-Bi-2H-1-benzopyran]-3-yl ester derivative; Proanthocyanidin gallate; Grape seed polyphenol derivative; Contact for details on additional synonyms.
EINECS	Contact for details

Quality Control

Our Benzoic acid, 3,4,5-trihydroxy-, (2R,2'R,3R,3'S,4R)-2,2'-bis(3,4-dihydroxyphenyl)-3,3',4,4'-tetrahydro-3',5,5',7,7'-pentahydroxy[4,8'-bi-2H-1-benzopyran]-3-yl ester is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and MS, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory compliance 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 for optimal long-term stability. Keep the container tightly sealed in a dry environment to minimize moisture exposure.

Specification

Item	Specification
Appearance	Light brown to brown powder
Identification (HPLC)	Conforms to reference standard
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 3.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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