Description

4H-1-Benzopyran-4-One, 2-[3,4-Bis(2-Hydroxyethoxy)Phenyl]-5-Hydroxy-3,7-Bis(2-Hydroxyethoxy)- is a high-purity, polyhydroxylated benzopyranone derivative of significant interest in advanced organic synthesis. Its molecular structure, featuring multiple hydroxyethoxy substituents, makes it a valuable key intermediate for the development of complex molecules with specific functional properties. This compound is primarily sought by R&D and production teams in the pharmaceutical, fine chemical, and advanced material science sectors.

Application

• Pharmaceutical Intermediate: Serves as a crucial building block for synthesizing novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring complex flavonoid or chromone-based structures.
• Fine Chemical Synthesis: Used in the research and production of specialty chemicals, including dyes, pigments, and functional polymers where its polyhydroxy structure can be leveraged.
• UV Absorber & Stabilizer Precursor: Acts as a key intermediate in the manufacture of advanced ultraviolet light absorbers and stabilizers for plastics, coatings, and cosmetic formulations.
• Biochemical Research: Employed as a standard or reagent in biochemical and pharmacological studies investigating antioxidant activity or specific receptor interactions.
• Material Science: Utilized in the development of organic electronic materials and advanced composites due to its conjugated system and functional group versatility.

Basic Information

Product Name	4H-1-Benzopyran-4-One, 2-[3,4-Bis(2-Hydroxyethoxy)Phenyl]-5-Hydroxy-3,7-Bis(2-Hydroxyethoxy)-
CAS No.	50846-13-4
Molecular Formula	C23H28O11
Molecular Weight	480.46 g/mol
Synonyms	2-[3,4-Bis(2-hydroxyethoxy)phenyl]-5-hydroxy-3,7-bis(2-hydroxyethoxy)-4H-chromen-4-one; 3,3',4',5,7-Pentahydroxyflavone Penta(2-hydroxyethyl) Ether; Quercetin Penta(2-hydroxyethyl) Ether; 2-(3,4-Bis(2-hydroxyethoxy)phenyl)-5-hydroxy-3,7-bis(2-hydroxyethoxy)-4H-1-benzopyran-4-one; Polyhydroxyethylated Quercetin Derivative; 50846-13-4; Light Stabilizer Intermediate 50846-13-4
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all critical parameters are provided with each shipment. We support customer audits and can tailor specifications to meet specific GMP or research-grade requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. For long-term storage, consider using desiccants or an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0% Any single impurity ≤ 1.0%

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