Isoxazole
Isoxazole (CAS: 288-14-2), with the empirical formula C3H3NO and a molecular weight of 69.06 g/mol, is a fundamental heterocyclic organic compound. It serves as a crucial building block in organic synthesis, particularly in the creation of more complex molecules. Isoxazole is recognised for its utility in the chemical synthesis of various compounds, including pharmaceuticals and agrochemicals, owing to its distinct structural features.

Chemical Synthesis Intermediate
Isoxazole is extensively employed as an intermediate in the synthesis of diverse organic molecules. Its reactive nature allows for various chemical transformations, making it valuable in the development of novel compounds.
Pharmaceutical Development
This compound is a key building block in the pharmaceutical industry for the construction of drug candidates. The isoxazole ring system is present in several biologically active molecules.
Agrochemical Research
Isoxazole derivatives are investigated and synthesised for potential applications in agrochemicals. Its structural motif can contribute to the efficacy of pesticides and herbicides.
Heterocyclic Chemistry
As a member of the isoxazole family, it is a significant compound within heterocyclic chemistry, offering a scaffold for further derivatisation and exploration of new chemical entities.
| Molecular weight | 69.06 |
|---|---|
| Empirical formula | C3H3NO |
| Assay | 99% |
| Boiling point | 93-95 °C(lit.) |
| Density | 1.078 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.427(lit.) |
| Vapour density | 2.4 (vs air) |
| Storage temperature | 2-8°C |

Hazard statements
- H225Highly flammable liquid and vapour
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 12 °C / 53.6 °F |
| Transport (UN / ADR) | UN 1993BF 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F |
| Risk statements (R) | 11 |
| 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 Isoxazole primarily used for?
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Isoxazole is primarily used as a building block in chemical synthesis, particularly in the development of pharmaceuticals and agrochemicals due to its heterocyclic structure.
What are the CAS number and formula for Isoxazole?
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The CAS number for Isoxazole is 288-14-2, and its empirical formula is C3H3NO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Isoxazole with an assay of 99%. This product is intended for research and technical use; TSS does not represent it as USP, BP, or EP grade.
How should Isoxazole be handled safely?
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Isoxazole is a flammable liquid and vapour (H225). Handling requires appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection such as a full-face respirator or an ABEK respirator filter. Ensure adequate ventilation and keep away from heat and ignition sources.
Is Isoxazole a controlled substance?
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The provided data does not indicate that Isoxazole (CAS: 288-14-2) is a controlled substance.
How is Isoxazole packed and exported?
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Isoxazole is packed according to safety regulations for flammable liquids and is available for export globally by Tech Serve Solutions.
How can I request a quote or sample for Isoxazole?
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To request a quote or a sample of Isoxazole, please contact our sales team through the website or via direct inquiry.
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