Description

(-)-Ecg-3''-o-Me CAS NO 83104-86-3 is a specific, high-purity methylated derivative of (-)-Epicatechin gallate, a key compound within the flavan-3-ol subclass of polyphenols. This precise chemical modification is critical for researchers and developers seeking to study structure-activity relationships, bioavailability, and targeted biological effects. It serves as an essential reference standard and building block for advanced R&D in the pharmaceutical, nutraceutical, and life science sectors.

Application

• Pharmaceutical Reference Standard: Used for the qualitative and quantitative analysis of related polyphenolic compounds in drug development and quality control.
• Bioavailability & Metabolism Studies: A key intermediate for investigating the metabolic pathways and absorption mechanisms of catechins.
• Nutraceutical Research: Employed in the development and testing of advanced dietary supplements targeting antioxidant and cellular health pathways.
• Life Science Reagent: Serves as a precise biochemical tool for enzymatic studies, receptor binding assays, and signal transduction research.
• Cosmeceutical Actives Development: Used in R&D for formulating advanced skincare products focused on anti-aging and photoprotection.
• Chemical Synthesis Intermediate: Acts as a specialized precursor for the synthesis of novel flavonoid analogs and derivatives.

Basic Information

Product Name	(-)-Ecg-3''-o-Me
CAS No.	83104-86-3
Molecular Formula	C23H20O11
Molecular Weight	472.40 g/mol
Synonyms	(-)-Epicatechin 3''-O-methyl gallate; 3''-O-Methyl-(-)-epicatechin gallate; (-)-Epicatechin-3-O-(3''-O-methyl)gallate; ECG 3''-O-Me; Methylated ECG; 2-(3,4-Dihydroxyphenyl)-3,4-dihydro-5,7-dihydroxy-3-[(3-hydroxy-4-methoxyphenyl)carbonyloxy]-2H-1-benzopyran-4-yl 3,4,5-trihydroxybenzoate
EINECS	Contact for details

Quality Control

Our (-)-Ecg-3''-o-Me is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via NMR and MS, to ensure it meets the stringent requirements for research and development. A detailed Certificate of Analysis (COA) is provided with every shipment, guaranteeing traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C in a dry, cool environment. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (HPLC)	Conforms
Identification (NMR)	Conforms
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.