4-Butoxybenzaldehyde
4-Butoxybenzaldehyde (CAS: 5736-88-9, Formula: C11H14O2, MW: 178.23) is an aromatic aldehyde characterised by a butoxy group. It serves as a valuable intermediate and building block in organic synthesis. Its applications span the creation of complex molecules, including heterocyclic compounds and steroidal derivatives, making it a useful reagent for researchers and chemists in pharmaceutical and fine chemical industries.

Synthesis of Heterocyclic Compounds
4-Butoxybenzaldehyde is utilized in the synthesis of nitrogen-containing heterocyclic compounds such as pyridine derivatives. An example includes its use in the preparation of 6-amino-4-(4-butoxyphenyl)-3,5-dicyanopyridine-2(1H)-thione.
Preparation of Steroidal Derivatives
This compound has been employed in the functionalization of steroid structures. It can be reacted via condensation to form derivatives like 16-(p-butoxybenzylidene)androsta-1,4-diene-3,17-dione.
Organic Building Block
As a functionalized benzaldehyde derivative, 4-Butoxybenzaldehyde acts as a versatile building block in multi-step organic synthesis projects, enabling the introduction of a butoxyphenyl moiety.
| Molecular weight | 178.23 |
|---|---|
| Linear formula | CH3(CH2)3OC6H4CHO |
| Assay | 98% |
| Boiling point | 285 °C(lit.) |
| Density | 1.031 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.539(lit.) |
| Application | 4-Butoxybenzaldehyde has been used in the synthesis of:• 6-amino-4-(4-butoxyphenyl)-3,5-dicyanopyridine-2(1H)-thione1• 16-(p-butoxybenzylidene)androsta-1,4-diene-3,17-dione via condensation reaction with androsta-1,4-diene-3,17-dione2 |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | >113 °C / >235.4 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
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-Butoxybenzaldehyde used for?
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4-Butoxybenzaldehyde is used as a building block in organic synthesis, particularly for creating heterocyclic compounds and steroidal derivatives.
What are the CAS number and formula for 4-Butoxybenzaldehyde?
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The CAS number is 5736-88-9 and the chemical formula is C11H14O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Butoxybenzaldehyde with an assay of 98%. We do not represent this product as USP, BP, EP, or pharmacopoeia grade.
How should 4-Butoxybenzaldehyde be handled safely?
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4-Butoxybenzaldehyde is a Warning substance that may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Always use appropriate personal protective equipment, including eyeshields and gloves, and ensure adequate ventilation or respiratory protection.
Is 4-Butoxybenzaldehyde a controlled substance?
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The provided data does not indicate that 4-Butoxybenzaldehyde is a controlled substance.
How is 4-Butoxybenzaldehyde packed, shipped, and exported?
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As a global supplier and exporter, Tech Serve Solutions adheres to all regulations for packing, shipping, and exporting chemical products like 4-Butoxybenzaldehyde.
How can I request a quote or sample of 4-Butoxybenzaldehyde?
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To request a quote or sample, please contact our sales team through the website or by phone, providing your specific requirements.
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