5-(4-Fluorophenyl)isoxazole-3-carboxaldehyde
5-(4-Fluorophenyl)isoxazole-3-carboxaldehyde (CAS: 640292-06-4), with the molecular formula C10H6FNO2 and a molecular weight of 191.16 g/mol, is a valuable heterocyclic building block. This fluorinated isoxazole derivative presents an aldehyde functional group, making it reactive for various synthetic transformations. It is primarily utilized in organic synthesis and the development of novel chemical entities, particularly within pharmaceutical and agrochemical research.

Organic Synthesis Intermediate
This compound serves as a key intermediate in the synthesis of more complex organic molecules. Its isoxazole core and aldehyde functionality allow for diverse chemical modifications.
Pharmaceutical Research
As a fluorinated heterocyclic building block, it is employed in the discovery and development of new pharmaceutical agents. The presence of fluorine can significantly influence drug properties.
Agrochemical Development
It can be utilized in the synthesis of potential agrochemicals. The isoxazole moiety is found in various pesticides and herbicides.
Material Science
This compound may find applications in the development of new materials due to its unique structural features and reactivity.
| Molecular weight | 191.16 |
|---|---|
| Empirical formula | C10H6FNO2 |
| Assay | 97% |
| Melting point | 91-95 °C(lit.) |

Hazard statements
- H302Harmful if swallowed
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| 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 5-(4-Fluorophenyl)isoxazole-3-carboxaldehyde used for?
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5-(4-Fluorophenyl)isoxazole-3-carboxaldehyde is primarily used as a building block in organic synthesis, particularly in pharmaceutical and agrochemical research and development, for creating novel chemical entities.
What are the CAS number and formula for this compound?
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The CAS number is 640292-06-4, and the empirical formula is C10H6FNO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-(4-Fluorophenyl)isoxazole-3-carboxaldehyde with an assay of 97%. This product is intended for research and chemical synthesis purposes. Tech Serve Solutions does not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 5-(4-Fluorophenyl)isoxazole-3-carboxaldehyde be handled safely?
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Based on GHS information, this compound is classified with a Warning signal word and the hazard statement H302 (Harmful if swallowed). Recommended personal protective equipment includes a dust mask type N95 (US), eyeshields, and gloves. Handle in a well-ventilated area.
Is this compound a controlled substance?
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The provided data does not indicate that 5-(4-Fluorophenyl)isoxazole-3-carboxaldehyde is a controlled substance.
How is this chemical packed and shipped?
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Tech Serve Solutions is a global supplier and exporter of fine chemicals. Specific packing and shipping details for 5-(4-Fluorophenyl)isoxazole-3-carboxaldehyde can be provided upon request, adhering to all relevant shipping regulations.
How can I request a sample or quote?
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To request a sample or a quote for 5-(4-Fluorophenyl)isoxazole-3-carboxaldehyde, please contact the Tech Serve Solutions sales department through our website or by phone.
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