3-Phenylisoxazole-5-carboxaldehyde
3-Phenylisoxazole-5-carboxaldehyde (CAS: 72418-40-7) is an organic compound with the molecular formula C10H7NO2 and a molecular weight of 173.17 g/mol. It presents as a key building block and intermediate, particularly within the realm of heterocyclic chemistry. This aldehyde functionality, coupled with the isoxazole core, makes it a valuable precursor in the synthesis of more complex organic molecules, finding utility in research and development settings.

Organic Synthesis Intermediate
3-Phenylisoxazole-5-carboxaldehyde serves as a versatile intermediate in the construction of diverse organic molecules. Its reactive aldehyde group allows for numerous derivatizations and coupling reactions.
Heterocyclic Chemistry Building Block
As a functionalized isoxazole derivative, it is an important building block for creating more complex heterocyclic structures relevant in medicinal chemistry and materials science.
Research and Development
This compound is utilised in laboratory settings for exploratory synthesis and the development of novel chemical entities. Its availability supports advancements in synthetic methodologies.
| Molecular weight | 173.17 |
|---|---|
| Empirical formula | C10H7NO2 |
| Assay | 97% |
| Storage temperature | 2-8°C |
| Melting point | 73-77 °C |

Hazard statements
- H302Harmful if swallowed
| 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 3-Phenylisoxazole-5-carboxaldehyde used for?
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3-Phenylisoxazole-5-carboxaldehyde is primarily used as a versatile intermediate and building block in organic synthesis, particularly in heterocyclic chemistry for research and development purposes.
What are the CAS number and formula for 3-Phenylisoxazole-5-carboxaldehyde?
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The CAS number for 3-Phenylisoxazole-5-carboxaldehyde is 72418-40-7, and its molecular formula is C10H7NO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Phenylisoxazole-5-carboxaldehyde with an assay of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 3-Phenylisoxazole-5-carboxaldehyde be handled and stored?
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3-Phenylisoxazole-5-carboxaldehyde is classified as harmful if swallowed (H302). It should be handled with appropriate personal protective equipment in a well-ventilated area. Storage at 2-8°C is recommended.
How is 3-Phenylisoxazole-5-carboxaldehyde packed, shipped, and exported?
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This chemical is carefully packed according to industry standards for safe transport and is available for global export by Tech Serve Solutions.
How can I request a sample or a quote for 3-Phenylisoxazole-5-carboxaldehyde?
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Please contact our sales team via the website or direct email to request a sample or obtain a quotation for 3-Phenylisoxazole-5-carboxaldehyde.
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