Description

Procyanidin B5 is a specific proanthocyanidin dimer, a class of polyphenolic compounds widely recognized for their potent antioxidant properties. This high-purity chemical intermediate is critical for research and development in nutraceutical and pharmaceutical applications, where standardized bioactive components are required. It serves as a key reference standard and raw material for manufacturers in the dietary supplement, cosmetic, and functional food industries seeking to leverage its biological activity.

Application

• Pharmaceutical Reference Standard: Used as a certified reference material (CRM) for the quality control and assay development of proanthocyanidin-based drugs and herbal extracts.
• Nutraceutical Formulations: Incorporated into dietary supplements for its well-documented antioxidant and free radical scavenging capabilities.
• Cosmetic & Skincare Actives: Serves as an active ingredient in anti-aging, protective, and reparative skincare products due to its ability to combat oxidative stress.
• Functional Food & Beverage Additive: Used to enhance the antioxidant profile and shelf-life stability of health-focused food and drink products.
• Biomedical Research: Employed in in vitro and in vivo studies to investigate mechanisms related to inflammation, vascular health, and metabolic syndromes.
• Botanical Extract Standardization: Essential for standardizing complex plant extracts like grape seed, pine bark, or cocoa to a specific procyanidin content.

Basic Information

Product Name	Procyanidin B5
CAS No.	12798-57-1
Molecular Formula	C30H26O13
Molecular Weight	594.52 g/mol
Synonyms	Procyanidin B5; Procyanidol B5; Epicatechin-(4β→8)-epicatechin-(4β→6)-epicatechin (trimer); [4,8-Bi-4',5,7-trihydroxyflavan]-3,3',4',5,7-pentol; Proanthocyanidin B5; Grape seed proanthocyanidin B5; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our Procyanidin B5 is produced under strict quality management systems. Each batch is analyzed to ensure high purity and consistency, meeting the rigorous standards required for research and industrial use. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C under an inert atmosphere (e.g., nitrogen or argon) to minimize oxidation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Light brown to white powder
Identification (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to structure
Assay (HPLC)	≥95.0%
Loss on Drying	≤2.0%
Residue on Ignition	≤0.5%
Heavy Metals (as Pb)	≤10 ppm
Solvent Residues	Meets ICH guidelines

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