3,4,5-Trimethoxyphenylacetic acid

3,4,5-三甲氧基苯乙酸

Also known as: Benzeneacetic acid, 3,4,5-trimethoxy-, 2-(3,4,5-Trimethoxyphenyl)acetic acid, 3,4,5-Trimethoxybenzeneacetic acid, 3,4,5-Trimethoxyphenyl acetic acid, (3,4,5-Trimethoxyphenyl)acetic acid, MFCD00004336, EINECS 213-456-2

3,4,5-Trimethoxyphenylacetic acid (CAS 951-82-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H14O5 and a molecular weight of 226.226 g/mol. It is also known as Benzeneacetic acid, 3,4,5-trimethoxy-, 2-(3,4,5-Trimethoxyphenyl)acetic acid and 3,4,5-Trimethoxybenzeneacetic acid. Key properties include a melting point of 117-120 °C(lit.), a boiling point of 360.8±37.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 138.1±20.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 951-82-6
Jingsj CID: J-27647-6
Molecular Formula: C₁₁H₁₄O₅
Chinese Name: 3,4,5-三甲氧基苯乙酸
Molecular Weight: 226.226 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	117-120 °C(lit.)
Boiling Point	360.8±37.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	138.1±20.0 °C

Frequently Asked Questions

What is the CAS number of 3,4,5-Trimethoxyphenylacetic acid?

The CAS number of 3,4,5-Trimethoxyphenylacetic acid is 951-82-6.

What are the molecular formula and molecular weight of 3,4,5-Trimethoxyphenylacetic acid?

3,4,5-Trimethoxyphenylacetic acid has molecular formula C11H14O5 and molecular weight 226.226 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "3,4,5-Trimethoxyphenylacetic acid (CAS 951-82-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27647-6 (accessed 2026-10-22).

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