Description

(-)-Epiafzelechin 3-o-Gallate is a high-purity, naturally derived flavan-3-ol compound. This specialized phytochemical is valued for its role as a key reference standard and active research compound in the study of polyphenol bioactivity. It is primarily sought by research institutions and manufacturers in the pharmaceutical, nutraceutical, and cosmetic industries for applications in formulation development and analytical method validation.

Application

• Pharmaceutical Research: Used as a reference standard in the isolation, identification, and quantification of related polyphenols in botanical extracts and formulations.
• Nutraceutical Development: Serves as a key ingredient or marker compound in the formulation of dietary supplements targeting antioxidant and metabolic health.
• Cosmetic Science: Incorporated into advanced skincare formulations for its potential antioxidant and skin-protective properties.
• Biochemical Studies: Employed in in vitro and cell-based assays to investigate mechanisms of action related to inflammation, oxidative stress, and cellular signaling pathways.
• Quality Control: Acts as a critical purity standard for the quality assurance of complex plant-derived ingredients and finished products.
• Academic Research: Utilized in universities and research institutes for fundamental studies on flavonoid chemistry, metabolism, and bioavailability.

Basic Information

Product Name	(-)-Epiafzelechin 3-o-Gallate
CAS No.	108907-43-3
Molecular Formula	C22H18O10
Molecular Weight	442.37 g/mol
Synonyms	Epiafzelechin 3-O-gallate; (-)-Epiafzelechin 3-gallate; Afzelechin 3-O-gallate (epi-); L-Epiafzelechin 3-O-gallate; 2-(3,4-Dihydroxyphenyl)-3,4-dihydro-5,7-dihydroxy-2H-1-benzopyran-3-yl 3,4,5-trihydroxybenzoate; (2R,3R)-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-5,7-dihydroxy-2H-1-benzopyran-3-yl 3,4,5-trihydroxybenzoate
EINECS	Contact for details

Quality Control

Our (-)-Epiafzelechin 3-o-Gallate is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and development. Certificates of Analysis (COA) detailing specific batch results are available upon request to support your regulatory and quality assurance needs.

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 (moisture-sensitive) nature, the container should be kept in a desiccated environment to maintain product integrity and prevent degradation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (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.