Description

Gallocatechin-(4α→8)-Catechin CAS NO 78392-25-3 is a specific proanthocyanidin dimer, a class of polyphenolic compounds known for their potent antioxidant properties. This compound is valued for its high purity and structural specificity, making it a critical reference standard and active ingredient in advanced research and product development. It is primarily sought by manufacturers and research institutions in the nutraceutical, pharmaceutical, and cosmetic industries for its bioactivity and role in quality control.

Application

• Pharmaceutical Reference Standard: Used for the identification, assay, and purity testing of proanthocyanidin-containing drugs and herbal extracts.
• Nutraceutical Ingredient: Incorporated into dietary supplements for its antioxidant and potential cardiovascular health-supporting properties.
• Cosmetic Actives: Formulated into anti-aging and skin-protective creams and serums for its ability to neutralize free radicals.
• Biomedical Research: Serves as a key reagent in studies investigating the mechanisms of polyphenols in inflammation, metabolic health, and neuroprotection.
• Food & Beverage Analysis: Employed as an analytical standard to quantify proanthocyanidin content in products like tea, cocoa, wine, and fruit extracts.
• Quality Control for Botanicals: Essential for standardizing complex botanical extracts (e.g., grape seed, pine bark) to ensure consistent potency and efficacy.

Basic Information

Product Name	Gallocatechin-(4α→8)-Catechin
CAS No.	78392-25-3
Molecular Formula	C30H26O13
Molecular Weight	594.52 g/mol
Synonyms	Procyanidin B4; Gallocatechin-(4α→8)-catechin; Gallocatechin-(4→8)-catechin; (2R,3S,4S)-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-5,7-dihydroxy-2H-1-benzopyran-3,4,8-triyl)tris(oxy))tris(3,4-dihydroxybenzenepropanoic acid) lactone; Catechin-(4α→8)-gallocatechin; Procyanidin dimer B4; Epigallocatechin-(4β→8)-catechin (stereoisomer)
EINECS	Contact for details

Quality Control

Every batch of Gallocatechin-(4α→8)-Catechin is produced and analyzed under strict quality management protocols. We provide comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles, typically determined by advanced chromatographic methods like HPLC and LC-MS. Our quality systems are designed to support compliance with cGMP, ISO, and other relevant regulatory frameworks for research and pharmaceutical applications.

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. The container should be kept in a cool, dry, and well-ventilated area.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (HPLC/LC-MS)	Conforms to reference standard
Assay (HPLC)	≥95.0%
Loss on Drying	≤2.0%
Residue on Ignition	≤0.5%
Heavy Metals (as Pb)	≤20 ppm
Residual Solvents (GC)	Complies with ICH guidelines
Microbiological Control	Meets Ph. Eur. criteria

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