2-Bromo-3-methylbutanoic acid

2-溴-3-甲基丁酸

Also known as: 2-Bromo-3-methylbutyric acid, 2-Bromoisovaleric acid, alpha-Bromoisovaleric acid, 2-Bromoisopentanoic acid, DL-2-Bromo-3-methylbutyric acid, DL-2-Bromoisovaleric acid, UNII:M69LGV465C, MFCD00004210, EINECS 209-291-0

2-Bromo-3-methylbutanoic acid (CAS 565-74-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H9BrO2 and a molecular weight of 181.028 g/mol. It is also known as 2-Bromo-3-methylbutyric acid, 2-Bromoisovaleric acid and alpha-Bromoisovaleric acid. Key properties include a melting point of 39-42 °C(lit.), a boiling point of 230.0±0.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 107.2±0.0 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
565-74-2
Jingsj CID
J-47990-9
Molecular Formula
C5H9BrO2
Chinese Name
2-溴-3-甲基丁酸
Molecular Weight
181.028 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point39-42 °C(lit.)
Boiling Point230.0±0.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point107.2±0.0 °C

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

Frequently Asked Questions

What is the CAS number of 2-Bromo-3-methylbutanoic acid?

The CAS number of 2-Bromo-3-methylbutanoic acid is 565-74-2.

What are the molecular formula and molecular weight of 2-Bromo-3-methylbutanoic acid?

2-Bromo-3-methylbutanoic acid has molecular formula C5H9BrO2 and molecular weight 181.028 g/mol.

Is 2-Bromo-3-methylbutanoic acid hazardous?

2-Bromo-3-methylbutanoic acid has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "2-Bromo-3-methylbutanoic acid (CAS 565-74-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47990-9 (accessed 2026-10-24).

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