4-HYDROXY-3,4-DIHYDRO-2H-THIENO[3,2-E][1,2]THIAZINE 1,1-DIOXIDE

Modify Date: 2025-08-25 13:58:36

4-HYDROXY-3,4-DIHYDRO-2H-THIENO[3,2-E][1,2]THIAZINE 1,1-DIOXIDE Structure
4-HYDROXY-3,4-DIHYDRO-2H-THIENO[3,2-E][1,2]THIAZINE 1,1-DIOXIDE structure
 Common Name 4-HYDROXY-3,4-DIHYDRO-2H-THIENO[3,2-E][1,2]THIAZINE 1,1-DIOXIDE
CAS Number 138890-97-8 Molecular Weight 205.25500
Density 1.637g/cm3 Boiling Point 410.6ºC at 760 mmHg
Molecular Formula C6H7NO3S2 Melting Point N/A
MSDS N/A Flash Point 202.1ºC

 Names

Name 1,1-dioxo-3,4-dihydro-2H-thieno[3,2-e]thiazin-4-ol

 Chemical & Physical Properties

Density 1.637g/cm3
Boiling Point 410.6ºC at 760 mmHg
Molecular Formula C6H7NO3S2
Molecular Weight 205.25500
Flash Point 202.1ºC
Exact Mass 204.98700
PSA 103.02000
LogP 1.48300
Vapour Pressure 1.77E-07mmHg at 25°C
Index of Refraction 1.656

 Safety Information

HS Code 2934999090

 Synthetic Route

3-Acetyl-2-thiophenesulfonamide structure

3-Acetyl-2-thio...

CAS#:138890-88-7

~69%

4-HYDROXY-3,4-DIHYDRO-2H-THIENO[3,2-E][1,2]THIAZINE 1,1-DIOXIDE Structure

4-HYDROXY-3,4-D...

CAS#:138890-97-8

Literature: Alcon Laboratories, Inc. Patent: US5153192 A1, 1992 ;
3-(2-Bromoacetyl)thiophene-2-sulfonamide structure

3-(2-Bromoacety...

CAS#:154127-28-3

~%

4-HYDROXY-3,4-DIHYDRO-2H-THIENO[3,2-E][1,2]THIAZINE 1,1-DIOXIDE Structure

4-HYDROXY-3,4-D...

CAS#:138890-97-8

Literature: AUSPEX PHARMACEUTICALS, INC. Patent: US2010/317655 A1, 2010 ; Location in patent: Page/Page column 15 ;

 Precursor & DownStream

Precursor  2

DownStream  0

 Customs

HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%
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Chemsrc provides CAS#:138890-97-8 MSDS, density, melting point, boiling point, structure, etc. Its name is 4-HYDROXY-3,4-DIHYDRO-2H-THIENO[3,2-E][1,2]THIAZINE 1,1-DIOXIDE>> amp version: 4-HYDROXY-3,4-DIHYDRO-2H-THIENO[3,2-E][1,2]THIAZINE 1,1-DIOXIDE

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