4-Methyl-5-thiazolylethyl acetate
4-Methyl-5-thiazolylethyl acetate (CAS 656-53-1), with the molecular formula C8H11NO2S and a molecular weight of 185.24 g/mol, is a valuable heterocyclic building block. This thiazole derivative is primarily utilised in chemical synthesis for the creation of more complex molecules. Its utility extends to research and development in various scientific fields, serving as a key intermediate in organic chemistry.
- IUPAC
- Sulfurol acetate

Organic Synthesis Intermediate
Serves as a crucial building block in the synthesis of various organic compounds. Its thiazole ring structure makes it valuable for constructing more complex molecules in multi-step chemical processes.
Research and Development
Employed in laboratory settings for R&D purposes, particularly in academic and industrial research focused on new material development or medicinal chemistry.
Heterocyclic Chemistry
A key component in heterocyclic chemistry due to its thiazole moiety, enabling the exploration and synthesis of novel heterocyclic systems.
| Molecular weight | 185.24 |
|---|---|
| Empirical formula | C8H11NO2S |
| Assay | 99% |
| Boiling point | 117-118 °C/6 mmHg(lit.) |
| Density | 1.147 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.51(lit.) |

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
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Transport (UN / ADR) | UN 3334 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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-5-thiazolylethyl acetate used for?
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4-Methyl-5-thiazolylethyl acetate (CAS 656-53-1) is primarily used as a building block in organic synthesis and in research and development within heterocyclic chemistry.
What is the CAS number and formula for 4-Methyl-5-thiazolylethyl acetate?
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The CAS number is 656-53-1 and the empirical formula is C8H11NO2S.
What grade and purity does Tech Serve Solutions supply for 4-Methyl-5-thiazolylethyl acetate?
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Tech Serve Solutions supplies 4-Methyl-5-thiazolylethyl acetate with an assay of 99%. This product is supplied for research and industrial use and is not represented as USP, BP, or EP grade.
How should 4-Methyl-5-thiazolylethyl acetate be handled safely?
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4-Methyl-5-thiazolylethyl acetate is classified as a Warning substance. It can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Always use appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, and handle in a well-ventilated area. Refer to the safety data sheet for detailed information.
How is 4-Methyl-5-thiazolylethyl acetate packed, shipped, and exported?
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Tech Serve Solutions exports fine chemicals globally. Products are packaged securely in compliance with international shipping regulations to ensure safe transport. Please contact us for specific shipping details and export capabilities.
How can I request a quote or sample for 4-Methyl-5-thiazolylethyl acetate?
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To request a quote or a sample of 4-Methyl-5-thiazolylethyl acetate, please visit the product page on our website or contact our sales team directly via email or phone.
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