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

3-氯-4-异噻唑羧酸

Also known as: 3-chloro-4-isothiazolecarboxylic acid, 3-chloroisothiazole-4-carboxylic acid, 3-chloro-1,2-thiazole-4-carboxylic acid, 4-Isothiazolecarboxylic acid, 3-chloro-

3-chloro-1,2-thiazole-4-carboxylic acid (CAS 933690-30-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H2ClNO2S and a molecular weight of 163.582 g/mol. It is also known as 3-chloro-4-isothiazolecarboxylic acid, 3-chloroisothiazole-4-carboxylic acid and 4-Isothiazolecarboxylic acid, 3-chloro-. Key properties include a boiling point of 187.3±33.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 67.1±25.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
933690-30-3
Jingsj CID
J-1413534-1
Molecular Formula
C4H2ClNO2S
Chinese Name
3-氯-4-异噻唑羧酸
Molecular Weight
163.582 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point187.3±33.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point67.1±25.4 °C

Frequently Asked Questions

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

The CAS number of 3-chloro-1,2-thiazole-4-carboxylic acid is 933690-30-3.

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

3-chloro-1,2-thiazole-4-carboxylic acid has molecular formula C4H2ClNO2S and molecular weight 163.582 g/mol.

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

Last updated:

How to cite: Jingsj. "3-chloro-1,2-thiazole-4-carboxylic acid (CAS 933690-30-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1413534-1 (accessed 2026-10-26).

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