2,4,5-Trimethyloxazole
2,4,5-Trimethyloxazole (CAS: 20662-84-4) is a heterocyclic organic compound with the molecular formula C6H9NO and a molecular weight of 111.14 g/mol. This chemical is a valuable building block utilised in organic synthesis, particularly within the realm of heterocyclic chemistry. It serves as a versatile intermediate for the construction of more complex molecular architectures, finding its place in research and development laboratories.
- IUPAC
- Trimethyloxazole
- Synonyms
- 20662-84-4C6H9NOTrimethyloxazole

Organic Synthesis Intermediate
Serves as a key building block in the synthesis of various organic compounds. Its oxazole ring structure allows for diverse chemical transformations and functionalisation.
Heterocyclic Chemistry Research
A useful reagent for chemists exploring novel heterocyclic structures. It can be incorporated into more complex molecules for potential applications in medicinal chemistry and materials science.
Laboratory Reagent
Employed in academic and industrial research laboratories for experimental purposes. Its well-defined properties make it suitable for a range of synthetic procedures.
| Molecular weight | 111.14 |
|---|---|
| Empirical formula | C6H9NO |
| Assay | 95% |
| Boiling point | 133-134 °C/760 mmHg(lit.) |
| Density | 0.957 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.442(lit.) |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 33 °C / 91.4 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Risk statements (R) | 10 |
| Safety statements (S) | 16 |
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 2,4,5-Trimethyloxazole used for?
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2,4,5-Trimethyloxazole is primarily used as a building block in organic synthesis and for research in heterocyclic chemistry.
What are the CAS number and formula for 2,4,5-Trimethyloxazole?
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The CAS number is 20662-84-4, and the empirical formula is C6H9NO.
What grade and purity does Tech Serve Solutions supply for 2,4,5-Trimethyloxazole?
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Tech Serve Solutions supplies 2,4,5-Trimethyloxazole with an assay of 95%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
What are the primary safety hazards associated with 2,4,5-Trimethyloxazole?
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2,4,5-Trimethyloxazole is a flammable liquid and vapour (H226). It requires careful handling, including the use of appropriate personal protective equipment such as eyeshields, gloves, and suitable respiratory protection, and should be kept away from heat and ignition sources.
How is 2,4,5-Trimethyloxazole packed and shipped?
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This chemical is packed and shipped according to relevant regulations, including UN 1993 classification for transport. We export globally.
How can I request a sample or quote for 2,4,5-Trimethyloxazole?
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Please contact our sales team through the website or by phone to request a sample or obtain a quotation for 2,4,5-Trimethyloxazole.
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