2-Bromo-1-(2-methoxyphenyl)ethanone

2-溴-2'-甲氧基苯乙酮

Also known as: 2-Bromo-2'-methoxyacetophenone, 2-Methoxyphenacyl bromide, o-Methoxyphenacyl bromide, 2'-Methoxyphenacyl bromide, 2-Bromo-1-(2-methoxyphenyl)ethan-1-one, α-Bromo-o-methoxyacetophenone

2-Bromo-1-(2-methoxyphenyl)ethanone (CAS 31949-21-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H9BrO2 and a molecular weight of 229.071 g/mol. It is also known as 2-Bromo-2'-methoxyacetophenone, 2-Methoxyphenacyl bromide and o-Methoxyphenacyl bromide. Key properties include a melting point of 43-45 °C(lit.), a boiling point of 323.7±0.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 123.2±20.4 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 31949-21-0
Jingsj CID: J-23871-1
Molecular Formula: C₉H₉BrO₂
Chinese Name: 2-溴-2'-甲氧基苯乙酮
Molecular Weight: 229.071 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	43-45 °C(lit.)
Boiling Point	323.7±0.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	123.2±20.4 °C

GHS Safety & Compliance

CorrosionSignal word: Danger

Frequently Asked Questions

What is the CAS number of 2-Bromo-1-(2-methoxyphenyl)ethanone?

The CAS number of 2-Bromo-1-(2-methoxyphenyl)ethanone is 31949-21-0.

What are the molecular formula and molecular weight of 2-Bromo-1-(2-methoxyphenyl)ethanone?

2-Bromo-1-(2-methoxyphenyl)ethanone has molecular formula C9H9BrO2 and molecular weight 229.071 g/mol.

Is 2-Bromo-1-(2-methoxyphenyl)ethanone hazardous?

2-Bromo-1-(2-methoxyphenyl)ethanone has GHS signal word Danger.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-Bromo-1-(2-methoxyphenyl)ethanone (CAS 31949-21-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23871-1 (accessed 2026-10-22).

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