4-Thiazolecarboxylic acid
4-Thiazolecarboxylic acid (CAS: 3973-08-8), with the empirical formula C4H3NO2S and a molecular weight of 129.14 g/mol, is a heterocyclic organic compound. It serves as a valuable building block in chemical synthesis. Its thiazole ring structure makes it a key intermediate for the development of novel molecules in various research and development sectors.

Chemical Synthesis Intermediate
4-Thiazolecarboxylic acid is utilised as a versatile intermediate in the synthesis of more complex organic molecules. Its functional groups allow for diverse chemical transformations.
Heterocyclic Chemistry
This compound is employed in the study and development of thiazole-based derivatives, which are important structural motifs in medicinal chemistry and materials science.
Research and Development
It is a useful reagent for academic and industrial research laboratories exploring new synthetic routes and novel chemical entities.
| Molecular weight | 129.14 |
|---|---|
| Empirical formula | C4H3NO2S |
| Assay | 97% |
| Melting point | 195-199 °C(lit.) |

Hazard statements
- H317May cause an allergic skin reaction
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 43 |
| Safety statements (S) | 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 4-Thiazolecarboxylic acid used for?
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4-Thiazolecarboxylic acid is primarily used as a building block and intermediate in chemical synthesis, particularly within heterocyclic chemistry and research and development settings.
What is the CAS number and formula for 4-Thiazolecarboxylic acid?
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The CAS number for 4-Thiazolecarboxylic acid is 3973-08-8, and its empirical formula is C4H3NO2S.
What grade and purity does Tech Serve Solutions supply for 4-Thiazolecarboxylic acid?
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Tech Serve Solutions supplies 4-Thiazolecarboxylic acid with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 4-Thiazolecarboxylic acid be handled safely?
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When handling 4-Thiazolecarboxylic acid, it is important to wear appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, faceshields, and gloves. This compound is classified under GHS07 with the signal word 'Warning' and has the hazard statement H317 (May cause an allergic skin reaction).
Can Tech Serve Solutions export 4-Thiazolecarboxylic acid?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 4-Thiazolecarboxylic acid.
How can I request a quote or sample for 4-Thiazolecarboxylic acid?
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To request a quote or sample of 4-Thiazolecarboxylic acid, please contact our sales team through the website or by phone.
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