2H-1,4-Benzothiazin-3(4H)-one
2H-1,4-Benzothiazin-3(4H)-one (CAS: 5325-20-2) is a heterocyclic organic compound with the molecular formula C8H7NOS and a molecular weight of 165.21 g/mol. This compound, characterised by its thiazine ring fused with a benzene ring and a ketone group, serves as a valuable building block in organic synthesis. It is primarily utilised in the development of novel chemical entities and materials across various research and industrial sectors.
- Synonyms
- C8H7NOS

Organic Synthesis Intermediate
2H-1,4-Benzothiazin-3(4H)-one is a versatile intermediate employed in the synthesis of more complex organic molecules. Its structure allows for various functional group transformations and further derivatisation.
Heterocyclic Chemistry Research
As a key member of the thiazine class, this compound is instrumental in heterocyclic chemistry research. It enables the exploration of novel ring systems and their potential applications.
Building Block for Novel Materials
The compound's unique structural features make it a useful building block in the design and synthesis of new materials with specific electronic or optical properties.
| Molecular weight | 165.21 |
|---|---|
| Empirical formula | C8H7NOS |
| Assay | 97% |
| Melting point | 176-178 °C(lit.) |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 2H-1,4-Benzothiazin-3(4H)-one primarily used for?
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2H-1,4-Benzothiazin-3(4H)-one is primarily used as a building block in organic synthesis and in heterocyclic chemistry research.
What is the CAS number and formula for 2H-1,4-Benzothiazin-3(4H)-one?
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The CAS number is 5325-20-2 and the empirical formula is C8H7NOS.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2H-1,4-Benzothiazin-3(4H)-one with an assay of 97%. This product is supplied for research and development purposes, and TSS does not represent it as USP, BP, or EP grade.
What are the safety and handling considerations for 2H-1,4-Benzothiazin-3(4H)-one?
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This compound has a WGK (German water hazard class) of 3, indicating it is hazardous to water. Handle with appropriate personal protective equipment in a well-ventilated area, avoiding dust formation and contact with skin and eyes.
How is 2H-1,4-Benzothiazin-3(4H)-one packed, shipped, and exported?
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2H-1,4-Benzothiazin-3(4H)-one is carefully packed to ensure safe transit and is available for global export by Tech Serve Solutions.
How can I request a quote or sample for 2H-1,4-Benzothiazin-3(4H)-one?
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To request a quote or sample, please contact our sales department via the website or by phone, providing the product name and CAS number.
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