3-Bromo-2-methylpropionic acid

2-甲基-3-溴丙酸

Also known as: 3-Bromoisobutyric acid, 2-Methyl-3-bromopropionic acid, Captopril EP Impurity D, Captopril impurity D, 3-Bromo-2-methylpropanoic acid, β-Bromoisobutyric acid, 2-methyl 3-bromopropanoic acid

3-Bromo-2-methylpropionic acid (CAS 56970-78-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H7BrO2 and a molecular weight of 167.00100 g/mol. It is also known as 3-Bromoisobutyric acid, 2-Methyl-3-bromopropionic acid and Captopril EP Impurity D. Key properties include a boiling point of 230.5ºC at 760mmHg, a density of 1.625g/cm3 and a flash point of 93.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 56970-78-6
Jingsj CID: J-1351348-5
Molecular Formula: C₄H₇BrO₂
Chinese Name: 2-甲基-3-溴丙酸
Molecular Weight: 167.00100 g/mol
Category: Organic Acids
Last updated: 8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	230.5ºC at 760mmHg
Density	1.625g/cm3
Flash Point	93.2ºC
Exact Mass	165.96300
PSA	37.30000
LogP	1.10200
Refractive Index	1.453

Activity & Biological Data

Additional Information	[1]. ANCA GABRIELA CÂRJE, et al. HPLC-UV METHOD APPROACH FOR THE ANALYSIS AND IMPURITY PROFILING OF CAPTOPRIL. [2]. Afrin S, et al. Eritadenine from Edible Mushrooms Inhibits Activity of Angiotensin Converting Enzyme in Vitro. J Agric Food Chem. 2016;64(11):2263-2268. [3]. Esmaeili S, et al. Captopril/enalapril inhibit promiscuous esterase activity of carbonic anhydrase at micromolar concentrations: An in vitro study. Chem Biol Interact. 2017;265:24-35.

Additional Information

[1]. ANCA GABRIELA CÂRJE, et al. HPLC-UV METHOD APPROACH FOR THE ANALYSIS AND IMPURITY PROFILING OF CAPTOPRIL. [2]. Afrin S, et al. Eritadenine from Edible Mushrooms Inhibits Activity of Angiotensin Converting Enzyme in Vitro. J Agric Food Chem. 2016;64(11):2263-2268. [3]. Esmaeili S, et al. Captopril/enalapril inhibit promiscuous esterase activity of carbonic anhydrase at micromolar concentrations: An in vitro study. Chem Biol Interact. 2017;265:24-35.

Customs & Trade Information

HS Code	2915900090
Summary	2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

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

The CAS number of 3-Bromo-2-methylpropionic acid is 56970-78-6.

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

3-Bromo-2-methylpropionic acid has molecular formula C4H7BrO2 and molecular weight 167.00100 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-Bromo-2-methylpropionic acid (CAS 56970-78-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1351348-5 (accessed 2026-10-28).

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