4-(4-Methoxyphenoxy)benzaldehyde
4-(4-Methoxyphenoxy)benzaldehyde (CAS: 78725-47-0) is a chemical compound with the formula H₃COC₆H₄OC₆H₄CHO and a molecular weight of 228.24 g/mol. This aldehyde serves as a valuable building block in organic synthesis. It is frequently employed in the preparation of more complex molecules, particularly within the fields of material science and medicinal chemistry research. Its structure, featuring both an aldehyde and a diaryl ether moiety, allows for diverse chemical transformations.

Organic Synthesis Intermediate
Utilised as a key intermediate in the construction of complex organic molecules. Its aldehyde functionality is amenable to various reactions such as Wittig, Grignard, and reductive amination.
Building Block for Research
Serves as a foundational component in the development of novel compounds for academic and industrial research. It is particularly useful in the synthesis of potential pharmaceutical candidates and advanced materials.
Precursor for Specialty Chemicals
Can be used as a precursor in the synthesis of specialty chemicals and fine chemical derivatives. Its aromatic and ether linkages offer points for further functionalisation.
| Molecular weight | 228.24 |
|---|---|
| Linear formula | H3COC6H4OC6H4CHO |
| Assay | 97% |
| Melting point | 58-62 °C |


Hazard statements
- H317May cause an allergic skin reaction
- H400Very toxic to aquatic life
Precautionary statements
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi,N |
| Risk statements (R) | 43-50 |
| Safety statements (S) | 36/37-61 |
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-(4-Methoxyphenoxy)benzaldehyde used for?
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4-(4-Methoxyphenoxy)benzaldehyde is used as an intermediate and building block in organic synthesis, particularly for the preparation of more complex molecules in research and development settings.
What is the CAS number and formula for 4-(4-Methoxyphenoxy)benzaldehyde?
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The CAS number is 78725-47-0, and the chemical formula is H₃COC₆H₄OC₆H₄CHO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-(4-Methoxyphenoxy)benzaldehyde with an assay of 97%. This product is intended for research and laboratory use and is not supplied as USP, BP, EP, or any other pharmacopoeia grade.
How should 4-(4-Methoxyphenoxy)benzaldehyde be handled?
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Handling requires appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, faceshields, and gloves. It is classified as a skin sensitizer (H317) and is very toxic to aquatic life (H400).
Is 4-(4-Methoxyphenoxy)benzaldehyde exported by TSS?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 4-(4-Methoxyphenoxy)benzaldehyde.
How can I request a sample or quote for 4-(4-Methoxyphenoxy)benzaldehyde?
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To request a sample or a quote, please contact our sales department through the website or by phone, providing the product name and CAS number.
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