5-Chloro-1,2-benzisothiazol-3(2H)-one

5-氯-1,2-苯并异噻唑-3(2H)-酮

Also known as: 1,2-Benzisothiazol-3(2H)-one, 5-chloro-, 1,2-Benzisothiazolin-3-one, 5-chloro-, 5-Chloro-1,2-benzisothiazolin-3-one, 5-Chloro-1,2-benzisothiazolone, 5-Chlorobenzisothiazolone, 5-Chlorobenzo[d]isothiazol-3-one, 5-Chloro-2-benzisothiazolin-3-one, EINECS 224-385-1

5-Chloro-1,2-benzisothiazol-3(2H)-one (CAS 4337-43-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H4ClNOS and a molecular weight of 185.63100 g/mol. It is also known as 1,2-Benzisothiazol-3(2H)-one, 5-chloro-, 1,2-Benzisothiazolin-3-one, 5-chloro- and 5-Chloro-1,2-benzisothiazolin-3-one. Key properties include a melting point of 265-266ºC and a density of 1.515g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4337-43-3
Jingsj CID
J-1178403-4
Molecular Formula
C7H4ClNOS
Chinese Name
5-氯-1,2-苯并异噻唑-3(2H)-酮
Molecular Weight
185.63100 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point265-266ºC
Density1.515g/cm3

Frequently Asked Questions

What is the CAS number of 5-Chloro-1,2-benzisothiazol-3(2H)-one?

The CAS number of 5-Chloro-1,2-benzisothiazol-3(2H)-one is 4337-43-3.

What are the molecular formula and molecular weight of 5-Chloro-1,2-benzisothiazol-3(2H)-one?

5-Chloro-1,2-benzisothiazol-3(2H)-one has molecular formula C7H4ClNOS and molecular weight 185.63100 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Chloro-1,2-benzisothiazol-3(2H)-one (CAS 4337-43-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1178403-4 (accessed 2026-10-24).

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