3-(4-Methoxyphenyl)propionaldehyde
3-(4-Methoxyphenyl)propionaldehyde (CAS: 20401-88-1), with the molecular formula C10H12O2 and a molar mass of 164.20 g/mol, is an aromatic aldehyde. It is a versatile organic building block primarily utilised in chemical synthesis. Its structure, featuring a methoxy-substituted phenyl ring and a propionaldehyde moiety, makes it a valuable intermediate for creating more complex molecules in research and industrial applications. TSS supplies this compound with a minimum assay of 95%.

Organic Synthesis Intermediate
This aldehyde serves as a key intermediate in organic synthesis, enabling the construction of diverse molecular frameworks. Its reactive aldehyde group can participate in numerous condensation and addition reactions.
Pharmaceutical Research
The compound may be employed in the early stages of pharmaceutical research for the development of novel drug candidates. Its aromatic and aldehyde functionalities offer opportunities for structural modification.
Fine Chemical Manufacturing
Used in the production of fine chemicals, this aldehyde contributes to the synthesis of specialty compounds for various industrial sectors. It is a useful C10 building block.
| Molecular weight | 164.20 |
|---|---|
| Empirical formula | C10H12O2 |
| Assay | 95% |
| Density | 1.037 g/mL at 25 °C |
| Refractive index | n20/D 1.529 |

Hazard statements
- H317May cause an allergic skin reaction
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Flash point | >110 °C / >230 °F |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 43 |
| Safety statements (S) | 36/37 |
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)propionaldehyde used for?
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3-(4-Methoxyphenyl)propionaldehyde is primarily used as an intermediate in organic synthesis, including in pharmaceutical research and fine chemical manufacturing.
What are the CAS number and molecular formula for 3-(4-Methoxyphenyl)propionaldehyde?
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The CAS number is 20401-88-1, and the molecular formula is C10H12O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-(4-Methoxyphenyl)propionaldehyde with a minimum assay of 95%. TSS does not represent this product as USP, BP, or EP grade.
What are the safety and handling requirements for 3-(4-Methoxyphenyl)propionaldehyde?
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This compound is classified with the GHS symbol GHS07 and signal word Warning, with hazard statement H317 (May cause an allergic skin reaction). Appropriate personal protective equipment (PCE280) such as gloves should be worn during handling. It has a flash point over 110 °C.
How is 3-(4-Methoxyphenyl)propionaldehyde packed and shipped?
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Tech Serve Solutions exports fine chemicals globally. Specific packing and shipping details will be provided upon inquiry, adhering to all relevant transport regulations.
How can I request a sample or quote for 3-(4-Methoxyphenyl)propionaldehyde?
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To request a sample or a quote, please contact the TSS sales department through our website or by phone, providing the product name and CAS number.
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