4-Methyl-2-(2-thienyl)thiazole-5-carboxylic acid
Tech Serve Solutions (TSS) offers 4-Methyl-2-(2-thienyl)thiazole-5-carboxylic acid (CAS: 209540-08-9), a heterocyclic organic compound with the molecular formula C9H7NO2S2 and a molecular weight of 225.29 g/mol. This chemical serves as a valuable building block in organic synthesis, particularly for researchers and industries involved in developing novel chemical entities and complex molecular structures. Its thiazole and thiophene moieties offer versatile reaction sites for further chemical modification.
- IUPAC
- 2-(2-Thienyl)-4-methylthiazole-5-carboxylic acid

Organic Synthesis Intermediate
Utilised as a key intermediate in the multi-step synthesis of more complex organic molecules. Its structure allows for diverse chemical transformations and functional group additions.
Heterocyclic Chemistry Research
A useful compound for researchers exploring the synthesis and properties of novel heterocyclic compounds. The thiazole and thiophene rings are common motifs in biologically active molecules.
Pharmaceutical Building Block
Serves as a foundational component in the development pathway for potential new pharmaceutical agents, where thiazole derivatives often exhibit significant biological activity.
| Molecular weight | 225.29 |
|---|---|
| Empirical formula | C9H7NO2S2 |
| Assay | 97% |
| Melting point | 238-242 °C |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
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 4-Methyl-2-(2-thienyl)thiazole-5-carboxylic acid used for?
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This compound is primarily used as a building block in organic synthesis and for research in heterocyclic chemistry, potentially serving as an intermediate in pharmaceutical development.
What are the CAS number and molecular formula?
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The CAS number for 4-Methyl-2-(2-thienyl)thiazole-5-carboxylic acid is 209540-08-9, and its molecular formula is C9H7NO2S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical with an assay of 97%. TSS does not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should 4-Methyl-2-(2-thienyl)thiazole-5-carboxylic acid be handled?
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This compound is a Warning substance that can cause skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment in a well-ventilated area. Avoid breathing dust/fume/gas/mist/vapours/spray. In case of contact with eyes, rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
How is this chemical packed, shipped, and exported?
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Tech Serve Solutions offers this chemical in various packaging sizes suitable for laboratory and industrial use, adhering to international shipping regulations for chemical export.
How can I request a sample or quote?
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To request a sample or a quote for 4-Methyl-2-(2-thienyl)thiazole-5-carboxylic acid, please contact the TSS sales department via our website or direct email.
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