4-Methoxy-2-methylphenylboronic acid

4-甲氧基-2-甲基苯硼酸

Also known as: (4-Methoxy-2-methylphenyl)boronic acid, 4-Methoxy-2-methylbenzeneboronic acid, 2-Methyl-4-methoxyphenylboronic acid, Boronic acid, B-(4-methoxy-2-methylphenyl)-

4-Methoxy-2-methylphenylboronic acid (CAS 208399-66-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H11BO3 and a molecular weight of 165.982 g/mol. It is also known as (4-Methoxy-2-methylphenyl)boronic acid, 4-Methoxy-2-methylbenzeneboronic acid and 2-Methyl-4-methoxyphenylboronic acid. Key properties include a melting point of 169-174 °C(lit.), a boiling point of 327.1±52.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 151.6±30.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
208399-66-0
Jingsj CID
J-27291-1
Molecular Formula
C8H11BO3
Chinese Name
4-甲氧基-2-甲基苯硼酸
Molecular Weight
165.982 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point169-174 °C(lit.)
Boiling Point327.1±52.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point151.6±30.7 °C

Frequently Asked Questions

What is the CAS number of 4-Methoxy-2-methylphenylboronic acid?

The CAS number of 4-Methoxy-2-methylphenylboronic acid is 208399-66-0.

What are the molecular formula and molecular weight of 4-Methoxy-2-methylphenylboronic acid?

4-Methoxy-2-methylphenylboronic acid has molecular formula C8H11BO3 and molecular weight 165.982 g/mol.

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

Last updated:

How to cite: Jingsj. "4-Methoxy-2-methylphenylboronic acid (CAS 208399-66-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27291-1 (accessed 2026-10-22).

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