Description

(2R,3R)-3-(β-D-Glucopyranosyloxy)-2,3-Dihydro-7-Hydroxy-2-(4-Hydroxyphenyl)-4H-1-Benzopyran-4-One is a high-purity flavonoid glycoside compound of significant interest in advanced research and development. This compound serves as a critical reference standard and a key intermediate for investigating biological activities and metabolic pathways. It is primarily sought by pharmaceutical R&D teams, nutraceutical formulators, and academic research institutions focused on natural product chemistry and pharmacology.

Application

• Pharmaceutical Reference Standard: Used for the identification, assay, and purity testing of related flavonoid-based drug candidates and botanical extracts.
• Nutraceutical Research: Investigated as a potential active ingredient or marker compound in dietary supplements targeting antioxidant and anti-inflammatory pathways.
• Biochemical Research: Serves as a substrate or inhibitor in enzymatic studies to explore flavonoid metabolism and bioavailability.
• Natural Product Isolation & Synthesis: Acts as a pure benchmark for the isolation of analogous compounds from plant sources or for use in semi-synthetic derivatization programs.
• Cosmeceutical Development: Evaluated for its potential skin-protective properties in advanced cosmetic formulations.
• Academic Research: Utilized in university and institutional labs for fundamental studies on flavonoid structure-activity relationships and glycosylation effects.

Basic Information

Product Name	(2R,3R)-3-(β-D-Glucopyranosyloxy)-2,3-Dihydro-7-Hydroxy-2-(4-Hydroxyphenyl)-4H-1-Benzopyran-4-One
CAS No.	19146-28-2
Molecular Formula	C21H22O11
Molecular Weight	450.39 g/mol
Synonyms	Astilbin; (2R,3R)-Astilbin; Neoastilbin; Isoastilbin; 3-O-α-L-Rhamnopyranosyltaxifolin; Taxifolin 3-O-rhamnoside; (2R,3R)-Taxifolin-3-O-α-L-rhamnopyranoside; Engelitin
EINECS	Contact for details

Quality Control

Every batch of our (2R,3R)-Astilbin is produced and tested under a rigorous quality management system. We provide comprehensive analytical data to ensure identity, purity, and consistency for your critical applications. A detailed Certificate of Analysis (COA) is supplied with each shipment, documenting compliance with agreed specifications. Our quality protocols are designed to meet the exacting standards of pharmaceutical R&D and analytical laboratories.

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 hygroscopic nature, the container must be kept tightly sealed in a low-humidity environment to prevent moisture absorption. For long-term storage, consider desiccants or inert atmosphere packing.

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	≤20 ppm
Specific Optical Rotation	Contact for details

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