4,5-Dimethylthiazole
4,5-Dimethylthiazole (CAS 3581-91-7) is a heterocyclic organic compound with the molecular formula C5H7NS and a molecular weight of 113.18 g/mol. This chemical serves as a valuable building block in organic synthesis. It has been utilised in the preparation of other specialised thiazole derivatives, contributing to the advancement of chemical research and development within the fields of heterocyclic chemistry and materials science. Tech Serve Solutions supplies this compound with an assay of 97%.
- Synonyms
- 4,5-DimethylthiazoleC5H7NS

Organic Synthesis Intermediate
4,5-Dimethylthiazole is employed as a key intermediate in the synthesis of more complex organic molecules. Its reactive nature allows for further functionalization in multi-step synthetic pathways.
Heterocyclic Chemistry Research
This compound is utilised in research laboratories focused on heterocyclic chemistry. It has been specifically documented for its use in preparing halogenated thiazole derivatives, such as 4-(bromomethyl)-5-(dibromomethyl)thiazole.
Building Block for Specialty Chemicals
As a C3 to C7 building block, 4,5-Dimethylthiazole is integral in the creation of various specialty chemicals. Its thiazole core provides a foundation for developing novel compounds with potential applications in diverse scientific fields.
| Molecular weight | 113.18 |
|---|---|
| Empirical formula | C5H7NS |
| Assay | 97% |
| Boiling point | 158 °C/742 mmHg(lit.) |
| Density | 1.07 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.521(lit.) |
| Application | 4,5-Dimethylthiazole was used in the preparation of 4-(bromomethyl)-5-(dibromomethyl)thiazole1. |



Hazard statements
- H226Flammable liquid and vapour
- H302Harmful if swallowed
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Flash point | 51 °C / 123.8 °F |
|---|---|
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 10-22-37/38-41 |
| Safety statements (S) | 16-26-39 |
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 4,5-Dimethylthiazole used for?
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4,5-Dimethylthiazole is used as a building block in organic synthesis, particularly in heterocyclic chemistry. It has been employed in the preparation of compounds like 4-(bromomethyl)-5-(dibromomethyl)thiazole.
What is the CAS number and molecular formula for 4,5-Dimethylthiazole?
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The CAS number for 4,5-Dimethylthiazole is 3581-91-7, and its molecular formula is C5H7NS.
What grade and purity does Tech Serve Solutions supply for 4,5-Dimethylthiazole?
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Tech Serve Solutions supplies 4,5-Dimethylthiazole with an assay of 97%. This product is supplied for research and laboratory use and is not represented as USP, BP, EP, or any other pharmacopoeial grade.
What are the safety and handling considerations for 4,5-Dimethylthiazole?
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4,5-Dimethylthiazole is a flammable liquid and vapour (H226), harmful if swallowed (H302), causes skin irritation (H315), causes serious eye damage (H318), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment in a well-ventilated area. Refer to the Safety Data Sheet for full details.
How is 4,5-Dimethylthiazole packed, shipped, and exported?
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4,5-Dimethylthiazole is carefully packaged according to international shipping regulations for hazardous materials. As a global supplier, Tech Serve Solutions has extensive experience in exporting chemicals worldwide.
How can I request a sample or quote for 4,5-Dimethylthiazole?
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To request a sample or a quotation for 4,5-Dimethylthiazole, please contact our sales department through the website or via direct enquiry, providing your contact details and the quantity required.
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