Description

Catechin-(4Alpha->8)-Epicatechin CAS NO 29106-51-2 is a specific proanthocyanidin dimer, a class of naturally occurring polyphenolic compounds known for their potent antioxidant properties. This high-purity reference standard is critical for research and development in nutraceuticals and pharmaceuticals, where precise chemical identity and activity are paramount. It is primarily sought by analytical laboratories, ingredient manufacturers, and R&D teams in the dietary supplement, cosmetic, and functional food industries for standardization, bioactivity studies, and quality control of complex botanical extracts.

Application

• Analytical Reference Standard: Used for the identification, quantification, and method validation in HPLC, LC-MS, and other analytical techniques for proanthocyanidin analysis.
• Nutraceutical R&D: Serves as a key bioactive marker compound in the development and standardization of antioxidant-rich dietary supplements, such as grape seed, pine bark, or green tea extracts.
• Cosmetic Ingredient Research: Employed in studies investigating the anti-aging, UV-protective, and skin-conditioning benefits of polyphenolic compounds for cosmetic formulations.
• Phytochemical Studies: Essential for academic and industrial research into the structure-activity relationships, bioavailability, and metabolic pathways of flavan-3-ols.
• Functional Food Development: Used as a standard to ensure the potency and consistency of polyphenol content in fortified foods and beverages.
• Quality Control (QC): Provides a benchmark for purity assessment and impurity profiling in the manufacturing of standardized botanical extracts.

Basic Information

Product Name	Catechin-(4Alpha->8)-Epicatechin
CAS No.	29106-51-2
Molecular Formula	C30H26O12
Molecular Weight	578.52 g/mol
Synonyms	Procyanidin B1; Epicatechin-(4β→8)-catechin; Catechin-(4→8)-epicatechin; Procyanidin dimer B1; [4,8]-Bis-[(2R,3S)-3,3',4',5,7-pentahydroxyflavan]; (+)-Catechin-(4α→8)-(-)-epicatechin; 29106-51-2; NSC 407303
EINECS	Contact for details

Quality Control

Our Catechin-(4Alpha->8)-Epicatechin is produced and handled under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity assessment and spectroscopic methods for identity confirmation (IR, NMR), to ensure it meets the high standards required for research and development. A detailed Certificate of Analysis (COA) specifying batch-specific results is provided with every shipment.

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)	Conforms to reference standard
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 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.