Methyl 3-oxotetrahydrothiophene-2-carboxylate
Methyl 3-oxotetrahydrothiophene-2-carboxylate (CAS: 2689-69-2, C6H8O3S) is a heterocyclic building block with a molecular weight of 160.19 g/mol. This compound is primarily utilised in chemical synthesis and organic chemistry research. It functions as a versatile intermediate for the construction of more complex molecules, particularly those containing thiophene rings. The substance is supplied with an assay of 96%.

Organic Synthesis Intermediate
Methyl 3-oxotetrahydrothiophene-2-carboxylate serves as a valuable intermediate in organic synthesis. Its structure allows for various chemical transformations, enabling the creation of diverse molecular architectures.
Heterocyclic Chemistry
This compound is a key building block for the synthesis of thiophene-containing heterocyclic compounds. These structures are prevalent in pharmaceuticals and materials science.
Research and Development
Utilised in research laboratories for exploring novel synthetic pathways and developing new chemical entities. Its reactivity profile makes it a subject of interest for synthetic chemists.
| Molecular weight | 160.19 |
|---|---|
| Empirical formula | C6H8O3S |
| Assay | 96% |
| Boiling point | 232-254 °C/0.1 mmHg(lit.) |
| Density | 1.281 g/mL at 1.281 °C(lit.) |
| Refractive index | n20/D 1.511(lit.) |
| Storage temperature | 2-8°C |
| Melting point | 38 °C(lit.) |

Hazard statements
- H302Harmful if swallowed
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Flash point | >109 °C / >228.2 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36 |
| Safety statements (S) | 26-36/37 |
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 Methyl 3-oxotetrahydrothiophene-2-carboxylate used for?
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Methyl 3-oxotetrahydrothiophene-2-carboxylate is primarily used as a versatile intermediate in organic synthesis, particularly for constructing thiophene-containing heterocyclic compounds and in research and development for exploring new chemical entities.
What are the CAS number and formula for Methyl 3-oxotetrahydrothiophene-2-carboxylate?
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The CAS number for Methyl 3-oxotetrahydrothiophene-2-carboxylate is 2689-69-2, and its empirical formula is C6H8O3S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methyl 3-oxotetrahydrothiophene-2-carboxylate with an assay of 96%. TSS does not represent this product as USP, BP, or EP grade.
How should Methyl 3-oxotetrahydrothiophene-2-carboxylate be handled safely?
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This compound is harmful if swallowed and causes serious eye irritation (H302, H319). Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. Ensure adequate ventilation.
Is Methyl 3-oxotetrahydrothiophene-2-carboxylate available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including Methyl 3-oxotetrahydrothiophene-2-carboxylate, and can fulfil international export orders.
How can I request a sample or quote for Methyl 3-oxotetrahydrothiophene-2-carboxylate?
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To request a sample or a quote for Methyl 3-oxotetrahydrothiophene-2-carboxylate, please contact the TSS sales team through the website or by phone.
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