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

Also known as: (2H)1,4-benzothiazin-3(4H)-one, 1,4-benzothiazin-3(4H)-one, 2H-benzo[b][1,4]thiazin-3(4H)-one, 3,4-dihydro-2H-1,4-benzothiazin-3-one, 4H-1,4-benzothiazin-3-one, 2H-1,4-benzothiazine-3-ol, MFCD00006698, EINECS 226-197-5

2H-1,4-benzothiazin-3(4H)-one (CAS 5325-20-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H7NOS and a molecular weight of 165.21200 g/mol. Key properties include a melting point of 176-178 °C(lit.), a boiling point of 356.6ºC at 760mmHg, a density of 1.287g/cm3 and a flash point of 169.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5325-20-2
Jingsj CID: J-23620-4
Molecular Formula: C₈H₇NOS
Molecular Weight: 165.21200 g/mol
Category: Ketones
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	176-178 °C(lit.)
Boiling Point	356.6ºC at 760mmHg
Density	1.287g/cm3
Flash Point	169.5ºC
Exact Mass	165.02500
PSA	54.40000
LogP	1.86880
Refractive Index	1.52

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

The CAS number of 2H-1,4-benzothiazin-3(4H)-one is 5325-20-2.

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

2H-1,4-benzothiazin-3(4H)-one has molecular formula C8H7NOS and molecular weight 165.21200 g/mol.

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. "2H-1,4-benzothiazin-3(4H)-one (CAS 5325-20-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23620-4 (accessed 2026-11-09).

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