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5-Methyl-4-isoxazolesulfonyl chloride

5-甲基-4-异恶唑磺酰氯

Also known as: 5-Methylisoxazole-4-sulfonyl chloride, 4-Isoxazolesulfonyl chloride, 5-methyl-, 5-Methyl-1,2-oxazole-4-sulfonyl chloride, 4-(Chlorosulfonyl)-5-methylisoxazole, 5-Methylisoxazole-4-sulphonyl chloride, 5-Methyl-4-isoxazolesulphonyl chloride

5-Methyl-4-isoxazolesulfonyl chloride (CAS 321309-26-6) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C4H4ClNO3S and a molecular weight of 181.59700 g/mol. It is also known as 5-Methylisoxazole-4-sulfonyl chloride, 4-Isoxazolesulfonyl chloride, 5-methyl- and 5-Methyl-1,2-oxazole-4-sulfonyl chloride. Key properties include a boiling point of 301.7ºC at 760mmHg, a density of 1.534g/cm3 and a flash point of 136.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
321309-26-6
Jingsj CID
J-1524081-1
Molecular Formula
C4H4ClNO3S
Chinese Name
5-甲基-4-异恶唑磺酰氯
Molecular Weight
181.59700 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point301.7ºC at 760mmHg
Density1.534g/cm3
Flash Point136.2ºC

Frequently Asked Questions

What is the CAS number of 5-Methyl-4-isoxazolesulfonyl chloride?

The CAS number of 5-Methyl-4-isoxazolesulfonyl chloride is 321309-26-6.

What are the molecular formula and molecular weight of 5-Methyl-4-isoxazolesulfonyl chloride?

5-Methyl-4-isoxazolesulfonyl chloride has molecular formula C4H4ClNO3S and molecular weight 181.59700 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Methyl-4-isoxazolesulfonyl chloride (CAS 321309-26-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1524081-1 (accessed 2026-10-26).

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