Description

Roburin A is a high-purity, naturally occurring ellagitannin compound, also known by its CAS registry number 132864-75-6. This specialized phytochemical is valued for its potent antioxidant properties and serves as a key reference standard and active ingredient in advanced research and product development. It is primarily sought by the pharmaceutical, nutraceutical, and cosmetic industries for applications in health supplements, skincare formulations, and scientific studies focused on oxidative stress and cellular health.

Application

• Pharmaceutical Reference Standard: Used as a certified reference material (CRM) for the quality control and quantification of ellagitannins in drug substances and herbal extracts via HPLC and LC-MS analysis.
• Nutraceutical Ingredient: Incorporated into dietary supplements and functional foods for its demonstrated antioxidant and potential health-promoting bioactivities.
• Cosmetic Actives: Formulated into anti-aging serums, creams, and lotions to protect skin from free radical damage and support skin vitality.
• Biomedical Research: Employed in in vitro and in vivo studies to investigate mechanisms related to inflammation, metabolism, and chronic disease pathways.
• Natural Product Isolation & Analysis: Serves as a critical marker compound for the authentication and standardization of oak-aged products and botanical extracts rich in ellagitannins.

Basic Information

Product Name	Roburin A
CAS No.	132864-75-6
Molecular Formula	C₄₁H₂₈O₂₆
Molecular Weight	936.65 g/mol
Synonyms	Roburin A; Vescalagin derivative; Grandinin; 1,3,4-Tri-O-galloyl-2,4;6-O-(S)-hexahydroxydiphenoyl-β-D-glucopyranose; Ellagitannin Roburin A; 2,3;4,6-Bis[(4,4',5,5',6,6'-hexahydroxy[1,1'-biphenyl]-2,2'-dicarbonyl)]-α/β-D-glucopyranose; Roburine A; CAS 132864-75-6
EINECS	Contact for details

Quality Control

Every batch of Roburin A is manufactured and tested under strict quality management systems to ensure identity, purity, and consistency. We provide comprehensive analytical data including HPLC purity, residual solvent analysis, and heavy metal screening. A Certificate of Analysis (COA) is supplied with each shipment, detailing compliance with agreed specifications. Our quality commitment supports applications requiring research-grade to pharmaceutical-grade materials.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C for long-term stability. This product is hygroscopic (moisture-sensitive) and should be handled in a low-humidity environment to prevent degradation.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to structure
Assay (HPLC)	≥95.0%
Water Content (KF)	≤5.0%
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.