7-Methoxy-1,4-benzothiazin-3(4H)-one

Also known as: 7-METHOXY-1,4-BENZOTHIAZIN-3-ONE, 7-METHOXY-1,4-BENZOTHIAZIN-3(4H)-ONE, 7-Methoxy-1,4-Benzothiazine-3-One, 7-Methoxy-1,4-benzothiazin-3(4H)-one, 7-Methoxy-2H-benzo[b][1,4]thiazin-3(4H)-one, 7-Methoxy-4H-benzo[1,4]thiazin-3-on, 7-methoxy-2H,4H-benzo[e]1,4-thiazin-3-one, 7-methoxy-2H-1,4-benzothiazin-3(4H)-one, 7-methoxy-2H-benzo[b][1,4]thiazin-3(4H)-one, 7-methoxy-4H-1,4-benzothiazin-3-one, 7-methoxy-4H-benzo[1,4]thiazin-3-one, 7-Methoxy-2H-benzo[b][1,4]thiazin-3(4H), 7-METHOXY 2H[1,4]BENZOTHIAZIN 3(4H)-ONE, MFCD02660686

7-Methoxy-1,4-benzothiazin-3(4H)-one (CAS 22726-30-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H9NO2S and a molecular weight of 195.23800 g/mol. Key properties include a melting point of 183-187ºC(lit.), a boiling point of 395.7ºC at 760mmHg, a density of 1.282g/cm3 and a flash point of 193.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 22726-30-3
Jingsj CID: J-32201-0
Molecular Formula: C₉H₉NO₂S
Molecular Weight: 195.23800 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	183-187ºC(lit.)
Boiling Point	395.7ºC at 760mmHg
Density	1.282g/cm3
Flash Point	193.1ºC
Exact Mass	195.03500
PSA	63.63000
LogP	1.87740
Vapor Pressure	1.81E-06mmHg at 25°C
Refractive Index	1.6

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-Methoxy-1,4-benzothiazin-3(4H)-one?

The CAS number of 7-Methoxy-1,4-benzothiazin-3(4H)-one is 22726-30-3.

What are the molecular formula and molecular weight of 7-Methoxy-1,4-benzothiazin-3(4H)-one?

7-Methoxy-1,4-benzothiazin-3(4H)-one has molecular formula C9H9NO2S and molecular weight 195.23800 g/mol.

What are the upstream and downstream products of 7-Methoxy-1,4-benzothiazin-3(4H)-one?

For 7-Methoxy-1,4-benzothiazin-3(4H)-one, Upstream Products: Chloroacetyl chloride, 2-Amino-5-methoxybenzenethiol, ethyl chloroacetate; Downstream Products: 7-hydroxy-2H-1,4-benzothiazin-3(4H)-one.

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-Methoxy-1,4-benzothiazin-3(4H)-one (CAS 22726-30-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32201-0 (accessed 2026-11-09).

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