(-)-Epigallocatechin 3-(3''-O-methyl)gallate

表没食子儿茶素 3-O-(3-O-甲基)没食子酸酯

Also known as: (-)-EGCG-3''-O-Me, Epigallocatechin 3-O-(3-O-methyl)gallate, EGCG3''Me, (2R,3R)-5,7-Dihydroxy-2-(3,4,5-trihydroxyphenyl)-3,4-dihydro-2H-chromen-3-yl 3,4-dihydroxy-5-methoxybenzoate, Benzoic acid, 3,4-dihydroxy-5-methoxy-, (2R,3R)-3,4-dihydro-5,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-2H-1-benzopyran-3-yl ester, UNII-O97U9TPY8V, (-)-Epigallocatechin-3-(3''-O-methyl)gallate

(-)-Epigallocatechin 3-(3''-O-methyl)gallate (CAS 83104-87-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C23H20O11 and a molecular weight of 472.398 g/mol. It is also known as (-)-EGCG-3''-O-Me, Epigallocatechin 3-O-(3-O-methyl)gallate and EGCG3''Me. Key properties include a melting point of 221-223 ºC(dec.), a boiling point of 856.1±65.0 °C at 760 mmHg, a density of 1.77 and a flash point of 298.9±27.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
83104-87-4
Jingsj CID
J-1956004-5
Molecular Formula
C23H20O11
Chinese Name
表没食子儿茶素 3-O-(3-O-甲基)没食子酸酯
Molecular Weight
472.398 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point221-223 ºC(dec.)
Boiling Point856.1±65.0 °C at 760 mmHg
Density1.77
Flash Point298.9±27.8 °C

Frequently Asked Questions

What is the CAS number of (-)-Epigallocatechin 3-(3''-O-methyl)gallate?

The CAS number of (-)-Epigallocatechin 3-(3''-O-methyl)gallate is 83104-87-4.

What are the molecular formula and molecular weight of (-)-Epigallocatechin 3-(3''-O-methyl)gallate?

(-)-Epigallocatechin 3-(3''-O-methyl)gallate has molecular formula C23H20O11 and molecular weight 472.398 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "(-)-Epigallocatechin 3-(3''-O-methyl)gallate (CAS 83104-87-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1956004-5 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.