7-Methyl-1,4-benzothiazin-3-one

Also known as: 7-Methyl-1,4-benzothiazin-3(4H)-one, 7-Methyl-2H-benzo[b][1,4]thiazin-3(4H)-one, 7-Methyl-4H-1,4-benzothiazin-3-one, 7-Methyl-2H,4H-benzo[e]1,4-thiazin-3-one, 9-(6-Amino-3-methyl-phenyl)-thioglykolsaeurelactam, MFCD02660690

7-Methyl-1,4-benzothiazin-3-one (CAS 30322-02-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H9NOS and a molecular weight of 179.23900 g/mol. Key properties include a melting point of 207-209ºC(lit.), a boiling point of 364.5ºC at 760 mmHg, a density of 1.24g/cm3 and a flash point of 174.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 30322-02-2
Jingsj CID: J-18008-5
Molecular Formula: C₉H₉NOS
Molecular Weight: 179.23900 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	207-209ºC(lit.)
Boiling Point	364.5ºC at 760 mmHg
Density	1.24g/cm3
Flash Point	174.3ºC
Exact Mass	179.04000
PSA	54.40000
LogP	2.17720
Refractive Index	1.612

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 7-Methyl-1,4-benzothiazin-3-one?

The CAS number of 7-Methyl-1,4-benzothiazin-3-one is 30322-02-2.

What are the molecular formula and molecular weight of 7-Methyl-1,4-benzothiazin-3-one?

7-Methyl-1,4-benzothiazin-3-one has molecular formula C9H9NOS and molecular weight 179.23900 g/mol.

What are the upstream and downstream products of 7-Methyl-1,4-benzothiazin-3-one?

For 7-Methyl-1,4-benzothiazin-3-one, Upstream Products: ethyl chloroacetate, 2-Amino-5-methylbenzenethiol, 3-Chloro-4-nitrotoluene.

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

Last updated: 8/21/2026

How to cite: Jingsj. "7-Methyl-1,4-benzothiazin-3-one (CAS 30322-02-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18008-5 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.