Description

Quercetin Dimer CAS NO 167276-19-9 is a specialized polyphenolic compound, representing a dimeric form of the well-known flavonoid quercetin. This advanced molecular structure offers enhanced stability and potentially unique biological activities compared to its monomeric counterpart, making it a valuable ingredient for high-performance applications. It is primarily sought after by research institutions and manufacturers in the nutraceutical, cosmeceutical, and pharmaceutical sectors for developing innovative health and wellness products.

Application

• As a potent antioxidant ingredient in premium dietary supplements and nutraceuticals targeting oxidative stress.
• In advanced cosmeceutical formulations for anti-aging, skin-brightening, and protective skincare products.
• As a key reference standard or intermediate in pharmaceutical research and development for novel therapeutics.
• For scientific research into the bioavailability, metabolism, and synergistic effects of complex flavonoids.
• In functional food and beverage applications where enhanced flavonoid content and stability are required.

Basic Information

Item	Detail
Product Name	Quercetin Dimer
CAS No.	167276-19-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Quercetin dimer; Diquercetin; Quercetin Dimer (CAS 167276-19-9); Bisquercetin; Flavonoid dimer; Quercetin dehydrodimer; Proanthocyanidin-related dimer; Polyphenol dimer
EINECS	Contact for details

Quality Control

Our Quercetin Dimer is produced and handled under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) upon request, detailing key parameters such as assay, related substances, and residual solvents. Our quality commitment supports applications requiring high-grade materials for research and development.

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 light-sensitive and easily oxidized nature, it is recommended to handle under an inert atmosphere for long-term storage and to minimize headspace in opened containers to prevent degradation.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder
Identification (HPLC/UV)	Conforms
Assay (HPLC)	≥95.0%
Loss on Drying	≤2.0%
Residue on Ignition	≤0.5%
Heavy Metals	≤20 ppm

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