2-bromo-5-methylthiophene-3-carboxylic acid

2-溴-5-甲基噻吩-3-羧酸

Also known as: 2-bromo-5-methyl-3-thiophenecarboxylic acid, 2-bromo-5-methylthiophene-3-carboxylic acid, 3-thiophenecarboxylic acid, 2-bromo-5-methyl-

2-bromo-5-methylthiophene-3-carboxylic acid (CAS 221061-14-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H5BrO2S and a molecular weight of 221.07200 g/mol. It is also known as 2-bromo-5-methyl-3-thiophenecarboxylic acid and 3-thiophenecarboxylic acid, 2-bromo-5-methyl-. Key properties include a boiling point of 310.387ºC at 760 mmHg, a density of 1.784g/cm3 and a flash point of 141.517ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
221061-14-9
Jingsj CID
J-1503269-6
Molecular Formula
C6H5BrO2S
Chinese Name
2-溴-5-甲基噻吩-3-羧酸
Molecular Weight
221.07200 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point310.387ºC at 760 mmHg
Density1.784g/cm3
Flash Point141.517ºC

Frequently Asked Questions

What is the CAS number of 2-bromo-5-methylthiophene-3-carboxylic acid?

The CAS number of 2-bromo-5-methylthiophene-3-carboxylic acid is 221061-14-9.

What are the molecular formula and molecular weight of 2-bromo-5-methylthiophene-3-carboxylic acid?

2-bromo-5-methylthiophene-3-carboxylic acid has molecular formula C6H5BrO2S and molecular weight 221.07200 g/mol.

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

Last updated:

How to cite: Jingsj. "2-bromo-5-methylthiophene-3-carboxylic acid (CAS 221061-14-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1503269-6 (accessed 2026-10-25).

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