7-hydroxy-2H-1,4-benzothiazin-3(4H)-one

Also known as: 7-HYDROXY-4H-BENZO[1,4]THIAZIN-3-ONE, 7-Hydroxy-1,4-benzothiazin-3-one, 7-Hydroxy-4H-benzo[1,4]thiazin-3-one, 7-Hydroxy-2H-benzo[b][1,4]thiazin-3(4H)-one, 7-hydroxy-3,4-dihydro-2H-1,4-benzothiazin-3-one, 2H-1,4-Benzothiazin-3(4H)-one, 7-hydroxy-

7-hydroxy-2H-1,4-benzothiazin-3(4H)-one (CAS 91375-75-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H7NO2S and a molecular weight of 181.21200 g/mol. Key properties include a boiling point of 448.1ºC at 760 mmHg, a density of 1.43g/cm3 and a flash point of 224.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 91375-75-6
Jingsj CID: J-1495805-5
Molecular Formula: C₈H₇NO₂S
Molecular Weight: 181.21200 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	448.1ºC at 760 mmHg
Density	1.43g/cm3
Flash Point	224.8ºC
Exact Mass	181.02000
PSA	74.63000
LogP	1.57440
Refractive Index	1.67

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-hydroxy-2H-1,4-benzothiazin-3(4H)-one?

The CAS number of 7-hydroxy-2H-1,4-benzothiazin-3(4H)-one is 91375-75-6.

What are the molecular formula and molecular weight of 7-hydroxy-2H-1,4-benzothiazin-3(4H)-one?

7-hydroxy-2H-1,4-benzothiazin-3(4H)-one has molecular formula C8H7NO2S and molecular weight 181.21200 g/mol.

What are the upstream and downstream products of 7-hydroxy-2H-1,4-benzothiazin-3(4H)-one?

For 7-hydroxy-2H-1,4-benzothiazin-3(4H)-one, Upstream Products: 7-Methoxy-1,4-benzothiazin-3(4H)-one, 2-Amino-5-methoxybenzenethiol, 2-Amino-6-methoxybenzothiazole.

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-hydroxy-2H-1,4-benzothiazin-3(4H)-one (CAS 91375-75-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1495805-5 (accessed 2026-11-09).

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