3-(4-Methoxyphenyl)-5-methylisoxazole-4-carboxaldehyde
3-(4-Methoxyphenyl)-5-methylisoxazole-4-carboxaldehyde (CAS: 273223-12-4) is an organic compound with the molecular formula C12H11NO3 and a molecular weight of 217.22 g/mol. This isoxazole derivative features an aldehyde functional group, making it a valuable building block in organic synthesis. It is commonly employed in the creation of more complex molecules within research and development settings. Tech Serve Solutions supplies this chemical with an assay of 97%.

Organic Synthesis Intermediate
This compound serves as a key intermediate in the synthesis of diverse organic molecules. Its aldehyde functionality readily participates in various chemical transformations, enabling the construction of complex heterocyclic structures.
Research and Development
Utilised in R&D laboratories, it acts as a versatile building block for exploring new chemical pathways and developing novel compounds. Its specific structure lends itself to applications in medicinal chemistry and materials science research.
Heterocyclic Chemistry
As an isoxazole derivative, it is a useful starting material for creating more elaborate heterocyclic systems. These structures are often of interest in the pharmaceutical and agrochemical industries.
| Molecular weight | 217.22 |
|---|---|
| Empirical formula | C12H11NO3 |
| Assay | 97% |
| Melting point | 63-68 °C |

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 3-(4-Methoxyphenyl)-5-methylisoxazole-4-carboxaldehyde used for?
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This compound is primarily used as a building block and intermediate in organic synthesis, particularly in research and development for creating complex heterocyclic molecules.
What are the CAS number and formula for this chemical?
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The CAS number is 273223-12-4, and its molecular formula is C12H11NO3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of 97%. We do not represent this product as USP, BP, EP, or other pharmacopoeia grades unless explicitly stated.
What are the primary safety concerns when handling this chemical?
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This compound is classified with a Warning signal word and carries the hazard statement H302 (Harmful if swallowed). Appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves, is recommended. Ensure good ventilation.
Is this chemical available for export and how is it shipped?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals. This product is packaged according to industry standards for safe transport and export.
How can I request a sample or a quote for 3-(4-Methoxyphenyl)-5-methylisoxazole-4-carboxaldehyde?
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To request a sample or a quote, please contact our sales team via the website or by telephone, referencing the product name and CAS number.
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