4,5-Dichloroisothiazole-3-carboxylic acid

4,5-二氯异噻唑-3-羧酸

Also known as: 3-Isothiazolecarboxylic acid, 4,5-dichloro-, 4,5-Dichloro-3-isothiazolecarboxylic acid, 4,5-dichloro-1,2-thiazole-3-carboxylic acid, 4,5-dichloro-isothiazol-3-carboxylic acid, TIMTEC-BB SBB000369

4,5-Dichloroisothiazole-3-carboxylic acid (CAS 131947-13-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4HCl2NO2S and a molecular weight of 198.02700 g/mol. It is also known as 3-Isothiazolecarboxylic acid, 4,5-dichloro-, 4,5-Dichloro-3-isothiazolecarboxylic acid and 4,5-dichloro-1,2-thiazole-3-carboxylic acid. Key properties include a melting point of 169ºC, a boiling point of 205.9ºC at 760mmHg and a density of 1.824g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 131947-13-2
Jingsj CID: J-1494916-4
Molecular Formula: C₄HCl₂NO₂S
Chinese Name: 4,5-二氯异噻唑-3-羧酸
Molecular Weight: 198.02700 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	169ºC
Boiling Point	205.9ºC at 760mmHg
Density	1.824g/cm3

Frequently Asked Questions

What is the CAS number of 4,5-Dichloroisothiazole-3-carboxylic acid?

The CAS number of 4,5-Dichloroisothiazole-3-carboxylic acid is 131947-13-2.

What are the molecular formula and molecular weight of 4,5-Dichloroisothiazole-3-carboxylic acid?

4,5-Dichloroisothiazole-3-carboxylic acid has molecular formula C4HCl2NO2S and molecular weight 198.02700 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. "4,5-Dichloroisothiazole-3-carboxylic acid (CAS 131947-13-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1494916-4 (accessed 2026-10-24).

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