2-Methylthiazole-4-carboxaldehyde
2-Methylthiazole-4-carboxaldehyde (CAS 20949-84-2) is an organic compound with the molecular formula C5H5NOS and a molecular weight of 127.16 g/mol. This aldehyde features a thiazole ring, making it a valuable heterocyclic building block. It serves as a key intermediate in organic synthesis, particularly in the development of new chemical entities and the preparation of complex organic molecules within research and industrial settings. Its unique structure lends itself to diverse chemical transformations.
- IUPAC
- 2-Methylthiazole-4-carbaldehyde,4-Formyl-2-methylthiazole
- Synonyms
- 2-Methylthiazole-4-carbaldehyde4-Formyl-2-methylthiazole

Organic Synthesis Intermediate
Serves as a versatile building block in the synthesis of more complex organic molecules. Its aldehyde functionality allows for various reactions such as condensation, oxidation, and reduction.
Heterocyclic Chemistry
The thiazole core makes it a useful starting material for creating novel heterocyclic compounds with potential applications in medicinal chemistry and material science.
Pharmaceutical Research
Utilised in the development of potential pharmaceutical agents, where the thiazole moiety is a common feature in many biologically active compounds.
Chemical Building Block
A fundamental component in combinatorial chemistry and drug discovery programs, enabling the construction of diverse chemical libraries.
| Molecular weight | 127.16 |
|---|---|
| Empirical formula | C5H5NOS |
| Assay | 97% |
| Melting point | 54-58 °C |

Hazard statements
- H302Harmful if swallowed
| Flash point | >110 °C / >230 °F |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22 |
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 2-Methylthiazole-4-carboxaldehyde used for?
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2-Methylthiazole-4-carboxaldehyde is primarily used as an intermediate in organic synthesis and as a building block in heterocyclic chemistry, particularly for pharmaceutical research and the development of new chemical entities.
What is the CAS number and molecular formula for 2-Methylthiazole-4-carboxaldehyde?
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The CAS number is 20949-84-2 and the molecular formula is C5H5NOS.
What grade and purity does Tech Serve Solutions supply for 2-Methylthiazole-4-carboxaldehyde?
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Tech Serve Solutions supplies 2-Methylthiazole-4-carboxaldehyde with an assay of 97%. We do not represent this product as USP, BP, EP, or any pharmacopoeia grade.
What are the main safety considerations when handling 2-Methylthiazole-4-carboxaldehyde?
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2-Methylthiazole-4-carboxaldehyde is classified as a Warning with H302 (Harmful if swallowed). Proper handling procedures, including the use of personal protective equipment, should be followed to avoid ingestion and contact.
Does Tech Serve Solutions export 2-Methylthiazole-4-carboxaldehyde?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 2-Methylthiazole-4-carboxaldehyde.
How can I request a quote or sample for 2-Methylthiazole-4-carboxaldehyde?
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Please contact our sales team or use the online inquiry form on our website to request a quote or sample for 2-Methylthiazole-4-carboxaldehyde.
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