4-Bromoisoxazole
4-Bromoisoxazole (CAS 97925-43-4) is a halogenated heterocyclic organic compound with the empirical formula C3H2BrNO and a molecular weight of 147.96 g/mol. As a key isoxazole building block, it serves as a valuable intermediate in the synthesis of more complex molecules. Its primary applications lie within chemical research and development, particularly in the pharmaceutical and agrochemical sectors, facilitating the creation of novel compounds.

Pharmaceutical Intermediate
Utilised in the synthesis of active pharmaceutical ingredients (APIs). The bromoisoxazole moiety can be incorporated into drug candidates for various therapeutic areas.
Agrochemical Synthesis
Serves as a building block for the development of new pesticides, herbicides, and fungicides. Its structure allows for the introduction of specific functionalities into agrochemical molecules.
Organic Synthesis Reagent
A versatile reagent in organic chemistry laboratories for constructing complex heterocyclic systems. It is employed in research settings to explore novel reaction pathways and molecular architectures.
Material Science Research
Potentially used in the development of novel materials where its unique structural and electronic properties can be leveraged.
| Molecular weight | 147.96 |
|---|---|
| Empirical formula | C3H2BrNO |
| Assay | 95% |
| Storage temperature | 2-8°C |
| Melting point | 38-43 °C |

Hazard statements
- H302Harmful if swallowed
| Flash point | 60 °C / 140 °F |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22 |
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-Bromoisoxazole used for?
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4-Bromoisoxazole is primarily used as a building block and intermediate in organic synthesis, particularly for developing pharmaceuticals, agrochemicals, and novel chemical compounds in research laboratories.
What is the CAS number and formula for 4-Bromoisoxazole?
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The CAS number for 4-Bromoisoxazole is 97925-43-4, and its empirical formula is C3H2BrNO.
What grade and purity does Tech Serve Solutions supply for 4-Bromoisoxazole?
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Tech Serve Solutions supplies 4-Bromoisoxazole with an assay of 95%. This product is typically considered a research or technical grade and is not represented as USP, BP, or EP.
How should 4-Bromoisoxazole be handled and stored?
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4-Bromoisoxazole is classified as harmful if swallowed (H302) and should be handled with appropriate personal protective equipment. It requires storage at 2-8°C.
Is 4-Bromoisoxazole a controlled substance?
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The provided data does not indicate that 4-Bromoisoxazole is a controlled substance.
How can I request a quote or sample for 4-Bromoisoxazole?
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To request a quote or sample, please contact the Tech Serve Solutions sales team through our website or by phone, providing the product name and CAS number.
How is 4-Bromoisoxazole packed and exported?
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4-Bromoisoxazole is carefully packed to ensure stability during transit and is available for global export by Tech Serve Solutions.
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