Description

Proanthocyanidins CAS NO 274678-42-1 are a class of polyphenolic bioflavonoids widely recognized for their potent antioxidant properties. These compounds are essential for formulators seeking natural, plant-derived ingredients to enhance product stability and efficacy. They are in high demand across the nutraceutical, cosmetic, and functional food industries for their health-promoting and protective benefits.

Application

• Dietary Supplements & Nutraceuticals: Key ingredient in capsules, tablets, and powders for cardiovascular, urinary tract, and general antioxidant support.
• Functional Foods & Beverages: Incorporated into health drinks, fortified snacks, and confectionery to provide antioxidant value and natural color stabilization.
• Cosmetics & Personal Care: Used in anti-aging serums, creams, and lotions for skin protection against oxidative stress and UV radiation.
• Pharmaceutical Intermediates: Serves as a starting material or active component in the research and development of therapeutic formulations.
• Animal Nutrition: Added to feed to improve animal health and vitality through natural antioxidant pathways.
• Research & Development: A critical standard and reagent in biochemical, pharmacological, and nutritional studies.

Basic Information

Product Name	Proanthocyanidins
CAS No.	274678-42-1
Molecular Formula	Typically C30H26O13 (for a dimeric procyanidin example; varies by polymer chain length)
Molecular Weight	Varies (594.5 g/mol for example dimer)
Synonyms	Procyanidolic Oligomers (PCOs); Oligomeric Proanthocyanidins (OPCs); Procyanidins; Grape Seed Extract (primary source); Pine Bark Extract (primary source); Condensed Tannins; Leukocyanidins; Flavanol Polymers
EINECS	Contact for details

Quality Control

Our Proanthocyanidins are manufactured under strict quality management systems. Each batch is tested to ensure it meets specifications for identity, purity, and composition, with a focus on polyphenol and proanthocyanidin content. Certificates of Analysis (COA) documenting key parameters such as assay by HPLC, residual solvents, and heavy metals are available upon request. We adhere to relevant standards for nutraceutical and cosmetic ingredients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This material is easily oxidized (store under inert atmosphere) and light-sensitive (store away from light). Keep container tightly sealed in a dry environment to minimize moisture absorption.

Specification

Item	Specification
Appearance	Brownish-red to tan fine powder
Identification (IR)	Conforms to reference standard
Assay (HPLC)	Min. 95% Proanthocyanidins
Loss on Drying	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 10 ppm
Total Aerobic Microbial Count	≤ 1000 cfu/g
Total Yeast & Mold	≤ 100 cfu/g

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