Description

Cornusiin B is a bioactive natural product belonging to the class of ellagitannins, isolated from plants of the *Cornus* genus. This compound is of significant interest for its potent biological activities, particularly as a key reference standard in pharmaceutical and nutraceutical research and development. It serves as a critical material for scientists and manufacturers in the pharmaceutical, biotechnology, and high-purity ingredient sectors who require a reliable, high-quality standard for analytical and bioactivity studies.

Application

• Pharmaceutical Reference Standard: Primary use as a certified reference material (CRM) for quality control, method validation, and quantification in drug development and herbal medicine analysis.
• Bioactivity Research: Used in in vitro and in vivo studies to investigate its antioxidant, anti-inflammatory, and potential anticancer properties.
• Nutraceutical Ingredient Standardization: Acts as a marker compound for the standardization and quality assurance of botanical extracts and dietary supplements derived from Cornus species.
• Academic and R&D: Essential for structural elucidation, metabolic pathway studies, and synthetic biology research in university and corporate laboratories.
• Analytical Method Development: Serves as a critical component for developing and calibrating HPLC, LC-MS, and other chromatographic assays.

Basic Information

Product Name	Cornusiin B
CAS No.	95263-70-0
Molecular Formula	C₄₁H₂₈O₂₆
Molecular Weight	936.65 g/mol
Synonyms	Cornusiin B; 1,2,3,4,6-Penta-O-galloyl-β-D-glucose; β-Penta-O-galloylglucose; PGG; 1,2,3,4,6-Pentagalloylglucose; 1,2,3,4,6-Penta-O-galloyl-β-D-glucopyranose; Tannic acid component; Gallotannin
EINECS	Contact for details

Quality Control

Every batch of Cornusiin B is manufactured and tested under strict quality management systems to ensure identity, purity, and consistency. Our products undergo rigorous quality testing, including advanced chromatographic and spectroscopic methods, to ensure compliance with industry standards for reference materials. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C (refrigerated) or as specified on the label or COA. The product is easily oxidized and light-sensitive; prolonged exposure to air, light, or elevated temperatures should be avoided to maintain stability.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals	≤ 20 ppm

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