2-chloro-4-methyl-1,3-thiazole-5-carboxylic acid

2-氯-4-甲基噻唑-5-羧酸

Also known as: 2-Chloro-4-methyl-5-thiazolecarboxylic acid, 2-Chloro-4-methylthiazole-5-carboxylic acid, 2-chloro-4-methyl-1,3-thiazole-5-carboxylic acid, 5-Thiazolecarboxylic acid, 2-chloro-4-methyl-

2-chloro-4-methyl-1,3-thiazole-5-carboxylic acid (CAS 40003-48-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4ClNO2S and a molecular weight of 177.60900 g/mol. It is also known as 2-Chloro-4-methyl-5-thiazolecarboxylic acid, 2-Chloro-4-methylthiazole-5-carboxylic acid and 5-Thiazolecarboxylic acid, 2-chloro-4-methyl-. Key properties include a boiling point of 364.409ºC at 760 mmHg, a density of 1.573 and a flash point of 174.188ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
40003-48-3
Jingsj CID
J-1497540-0
Molecular Formula
C5H4ClNO2S
Chinese Name
2-氯-4-甲基噻唑-5-羧酸
Molecular Weight
177.60900 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point364.409ºC at 760 mmHg
Density1.573
Flash Point174.188ºC

Frequently Asked Questions

What is the CAS number of 2-chloro-4-methyl-1,3-thiazole-5-carboxylic acid?

The CAS number of 2-chloro-4-methyl-1,3-thiazole-5-carboxylic acid is 40003-48-3.

What are the molecular formula and molecular weight of 2-chloro-4-methyl-1,3-thiazole-5-carboxylic acid?

2-chloro-4-methyl-1,3-thiazole-5-carboxylic acid has molecular formula C5H4ClNO2S and molecular weight 177.60900 g/mol.

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

Last updated:

How to cite: Jingsj. "2-chloro-4-methyl-1,3-thiazole-5-carboxylic acid (CAS 40003-48-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1497540-0 (accessed 2026-10-24).

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