Ethyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate
Ethyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate (CAS 24683-26-9) is a heterocyclic organic compound with a molecular weight of 283.30 g/mol. It functions as a valuable building block in chemical synthesis, particularly within the realm of heterocyclic chemistry. This compound's structure lends itself to further chemical modification, making it a useful intermediate for researchers and industrial chemists.
- Synonyms
- 24683-26-9C12H13NO5S

Organic Synthesis Intermediate
Utilised as a key intermediate in the synthesis of more complex organic molecules. Its functional groups allow for diverse chemical transformations.
Heterocyclic Chemistry Research
Serves as a foundational component in research involving benzothiazine derivatives. Investigations into novel heterocyclic structures commonly employ such building blocks.
Pharmaceutical Building Block
Acts as a precursor or intermediate in the development pathways of potential pharmaceutical agents. Its structure may be incorporated into drug discovery programmes.
| Molecular weight | 283.30 |
|---|---|
| Empirical formula | C12H13NO5S |
| Assay | 97% |
| Melting point | 140-144 °C(lit.) |

Hazard statements
- H331Toxic if inhaled
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P311Call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1 / PGII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | T |
| Risk statements (R) | 23 |
| Safety statements (S) | 45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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 Ethyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate used for?
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This compound is primarily used as a building block and intermediate in organic synthesis, particularly for the creation of heterocyclic compounds and potentially in pharmaceutical research.
What are the CAS number and molecular formula?
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The CAS number is 24683-26-9 and the empirical formula is C12H13NO5S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical with an assay of 97%. We do not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should Ethyl 4-hydroxy-2-methyl-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate be handled?
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This compound is classified as acutely toxic if inhaled (H331) and carries a 'Danger' signal word. Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and a P2 respirator, is essential. Handle with caution and ensure adequate ventilation.
Is this chemical available for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals. Please contact us for international shipping details.
How can I request a sample or quote?
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To request a sample or a quote, please contact our sales team via the website or directly by phone. We will be happy to assist you.
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