2-(chloromethyl)-2H-1,4-benzothiazin-3(4H)-one

2-氯甲基-2H-1,4-苯并噻嗪-3(4H)-酮

Also known as: 2-(Chloromethyl)-2H-benzo[b][1,4]thiazin-3(4H)-one, 2-(chloromethyl)-3,4-dihydro-2H-1,4-benzothiazin-3-one, 2H-1,4-Benzothiazin-3(4H)-one, 2-(chloromethyl)-

2-(chloromethyl)-2H-1,4-benzothiazin-3(4H)-one (CAS 139331-42-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H8ClNOS and a molecular weight of 213.68400 g/mol. It is also known as 2-(Chloromethyl)-2H-benzo[b][1,4]thiazin-3(4H)-one, 2-(chloromethyl)-3,4-dihydro-2H-1,4-benzothiazin-3-one and 2H-1,4-Benzothiazin-3(4H)-one, 2-(chloromethyl)-. Key properties include a boiling point of 410.457ºC at 760 mmHg, a density of 1.33g/cm3 and a flash point of 202.037ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
139331-42-3
Jingsj CID
J-1521447-4
Molecular Formula
C9H8ClNOS
Chinese Name
2-氯甲基-2H-1,4-苯并噻嗪-3(4H)-酮
Molecular Weight
213.68400 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point410.457ºC at 760 mmHg
Density1.33g/cm3
Flash Point202.037ºC

Frequently Asked Questions

What is the CAS number of 2-(chloromethyl)-2H-1,4-benzothiazin-3(4H)-one?

The CAS number of 2-(chloromethyl)-2H-1,4-benzothiazin-3(4H)-one is 139331-42-3.

What are the molecular formula and molecular weight of 2-(chloromethyl)-2H-1,4-benzothiazin-3(4H)-one?

2-(chloromethyl)-2H-1,4-benzothiazin-3(4H)-one has molecular formula C9H8ClNOS and molecular weight 213.68400 g/mol.

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

Last updated:

How to cite: Jingsj. "2-(chloromethyl)-2H-1,4-benzothiazin-3(4H)-one (CAS 139331-42-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1521447-4 (accessed 2026-10-24).

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