Description

(2R,3R)-8-[(2S,3R)-5,7-Dihydroxy-2-(4-Hydroxyphenyl)-4-Oxo-Chroman-3-Yl]-3,5,7-Trihydroxy-2-(3-Hydroxy-4-Methoxy-Phenyl)Chroman-4-One is a high-purity, complex flavonoid compound of significant interest in advanced research and development. Its intricate stereochemistry and polyphenolic structure make it a valuable reference standard and key intermediate for synthesizing novel bioactive molecules. This compound is primarily sought by pharmaceutical, nutraceutical, and life science research organizations focused on exploring antioxidant, anti-inflammatory, and metabolic pathways.

Application

• Pharmaceutical Reference Standard: Used for method development, validation, and quality control in the analysis of flavonoid-based drugs and natural extracts.
• Biochemical Research: Serves as a critical tool for studying enzyme inhibition, receptor binding, and cellular signaling mechanisms related to oxidative stress.
• Nutraceutical Development: Acts as a high-purity marker compound or active ingredient in the formulation of standardized dietary supplements.
• Organic Synthesis Intermediate: Utilized as a sophisticated building block for the semi-synthesis of novel flavonoid derivatives with enhanced bioactivity.
• Cosmeceutical Actives: Incorporated into advanced skincare formulations for its potential antioxidant and skin-protective properties.

Basic Information

Product Name	(2R,3R)-8-[(2S,3R)-5,7-Dihydroxy-2-(4-Hydroxyphenyl)-4-Oxo-Chroman-3-Yl]-3,5,7-Trihydroxy-2-(3-Hydroxy-4-Methoxy-Phenyl)Chroman-4-One
CAS No.	68705-66-8
Molecular Formula	C31H22O13
Molecular Weight	602.50 g/mol
Synonyms	Procyanidin B2 3'-O-gallate; Procyanidin B2 3'-Gallate; Epicatechin-(4β→8)-epicatechin-3-O-gallate; 3'-O-Galloylprocyanidin B2; [4,8-Bi-2H-1-benzopyran]-4-one, 3,3',4,4',5,5',7,7'-octahydroxy-2,2'-bis(4-hydroxy-3-methoxyphenyl)-, (2R,3R,2'R,3'R)-rel-; Gallocatechin-(4α→8)-catechin gallate (isomeric form); Flavonoid dimer gallate
EINECS	Contact for details

Quality Control

Our production of (2R,3R)-8-[(2S,3R)-5,7-Dihydroxy-2-(4-Hydroxyphenyl)-4-Oxo-Chroman-3-Yl]-3,5,7-Trihydroxy-2-(3-Hydroxy-4-Methoxy-Phenyl)Chroman-4-One adheres to stringent quality protocols. Each batch is characterized and tested using advanced analytical techniques including HPLC, NMR, and Mass Spectrometry to confirm identity, stereochemical purity, and potency. We provide comprehensive Certificates of Analysis (COA) with detailed chromatographic and spectroscopic data, ensuring traceability and compliance with research-grade standards. Specifications can be aligned with client requirements for specific applications.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at a controlled room temperature (15-25°C) to minimize oxidation and degradation. The container should be kept in a cool, dry, and well-ventilated area away from incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm
Specific Rotation	Contact for details

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