Description

Afzelechin-(4Alpha->8)-Epiafzelechin is a proanthocyanidin dimer, a specific type of condensed tannin with significant biological and chemical research interest. This compound matters as a high-purity reference standard for analytical and pharmacological studies, offering a precise tool for quality control and method development. It is primarily needed by research institutions, pharmaceutical R&D departments, and analytical laboratories focusing on natural product chemistry, nutraceuticals, and polyphenol research.

Application

• Analytical Reference Standard: Used as a primary standard in HPLC, LC-MS, and other chromatographic methods for the quantification of proanthocyanidins in plant extracts, foods, and beverages.
• Phytochemical & Natural Product Research: Serves as a key compound for studying the structure-activity relationships, biosynthesis, and metabolic pathways of condensed tannins.
• Nutraceutical & Dietary Supplement R&D: Employed in the development and standardization of antioxidant-rich supplements, where precise quantification of active proanthocyanidin components is critical.
• Pharmacological Screening: Utilized in in vitro and in vivo studies to investigate potential bioactivities, including antioxidant, anti-inflammatory, and cardioprotective effects.
• Beverage & Food Science: Applied in the analysis of tannin content and composition in products like wine, tea, cocoa, and fruits to correlate with flavor, astringency, and shelf-life.
• Cosmetic Ingredient Research: Investigated for potential topical applications due to the antioxidant properties associated with proanthocyanidin compounds.

Basic Information

Item	Detail
Product Name	Afzelechin-(4Alpha->8)-Epiafzelechin
CAS No.	1383627-30-2
Molecular Formula	C30H26O12
Molecular Weight	578.52 g/mol
Synonyms	Procyanidin B9; Afzelechin-(4α→8)-epiafzelechin; Epiafzelechin-(4β→8)-afzelechin; [4,8'']-Bi-afzelechin; Proanthocyanidin B9; Condensed Tannin Dimer B9
EINECS	Contact for details

Quality Control

Every batch of Afzelechin-(4Alpha->8)-Epiafzelechin is produced and analyzed under strict quality management protocols to ensure identity, purity, and consistency. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing comprehensive analytical results, including HPLC purity, are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C to minimize oxidation and ensure long-term stability. Keep the container in a cool, dry, and well-ventilated area.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (HPLC)	Conforms to reference standard
Identification (MS)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%

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