3,4-Dihydro-2H-1,4-benzothiazine

Also known as: 2,3-Dihydro-1,4-benzothiazine, 2H-1,4-Benzothiazine,3,4-dihydro-, 3,4-Dihydro-2H-benzo[b][1,4]thiazine, 3,4-Dihydro-2H-benzo[1,4]thiazine, 2,3-Dihydrobenzo-1,4-thiazine, AKOS BBS-00002921, ASINEX-REAG BAS 07625764, TIMTEC-BB SBB010332

3,4-Dihydro-2H-1,4-benzothiazine (CAS 3080-99-7) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H9NS and a molecular weight of 151.22900 g/mol. Key properties include a boiling point of 274.4ºC at 760 mmHg, a density of 1.147g/cm3 and a flash point of 119.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3080-99-7
Jingsj CID: J-1013398-9
Molecular Formula: C₈H₉NS
Molecular Weight: 151.22900 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	274.4ºC at 760 mmHg
Density	1.147g/cm3
Flash Point	119.8ºC
Exact Mass	151.04600
PSA	37.33000
LogP	2.34220
Refractive Index	1.604

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 3,4-Dihydro-2H-1,4-benzothiazine?

The CAS number of 3,4-Dihydro-2H-1,4-benzothiazine is 3080-99-7.

What are the molecular formula and molecular weight of 3,4-Dihydro-2H-1,4-benzothiazine?

3,4-Dihydro-2H-1,4-benzothiazine has molecular formula C8H9NS and molecular weight 151.22900 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. "3,4-Dihydro-2H-1,4-benzothiazine (CAS 3080-99-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1013398-9 (accessed 2026-11-09).

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