4-Butoxybenzonitrile
4-Butoxybenzonitrile (CAS: 5203-14-5; Formula: CH3(CH2)3OC6H4CN) is an aromatic organic compound with a molecular weight of 175.23 g/mol. It is characterised by a nitrile group and a butoxy substituent on a benzene ring. This compound serves as a valuable building block in organic synthesis, particularly within the fields of chemical synthesis and materials science, owing to its functional groups. It is supplied by TSS with an assay of 99%.

Organic Synthesis Intermediate
4-Butoxybenzonitrile is utilised as a key intermediate in the synthesis of more complex organic molecules. Its nitrile and ether functionalities allow for diverse chemical transformations, making it useful in developing novel compounds.
Materials Science Research
This compound can be employed in research related to materials science, potentially in the development of liquid crystals or other advanced materials. The aromatic structure and functional groups lend themselves to specific material properties.
Pharmaceutical and Agrochemical Research
As a building block, 4-Butoxybenzonitrile may find application in the early stages of research for new pharmaceutical agents or agrochemicals, where specific structural motifs are required for biological activity.
| Molecular weight | 175.23 |
|---|---|
| Linear formula | CH3(CH2)3OC6H4CN |
| Assay | 99% |
| Boiling point | 240-244 °C(lit.) |
| Density | 0.999 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.526(lit.) |

Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 110 °C / 230 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 21/22-36/37/38 |
| Safety statements (S) | 26-36 |
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-Butoxybenzonitrile used for?
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4-Butoxybenzonitrile is primarily used as a building block in organic synthesis and in research for materials science, pharmaceuticals, and agrochemicals. It is not intended for human or animal consumption.
What is the CAS number and molecular formula for 4-Butoxybenzonitrile?
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The CAS number for 4-Butoxybenzonitrile is 5203-14-5, and its molecular formula is CH3(CH2)3OC6H4CN.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Butoxybenzonitrile with a purity of 99% (assay). We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade unless explicitly stated in the product specifications.
How should 4-Butoxybenzonitrile be handled?
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4-Butoxybenzonitrile is classified with the GHS07 symbol and a 'Warning' signal word. It is harmful if swallowed, harmful in contact with skin, causes skin irritation, causes serious eye irritation, and may cause respiratory irritation (H302-H312-H315-H319-H335). Appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, should be used. Consult the Safety Data Sheet for detailed handling procedures.
Is 4-Butoxybenzonitrile a controlled substance?
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Based on the provided data, 4-Butoxybenzonitrile is not indicated as a controlled substance. However, customers should verify local regulations if they have concerns.
How is 4-Butoxybenzonitrile packed and shipped?
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4-Butoxybenzonitrile is packed and shipped according to standard chemical handling protocols to ensure safe transit. TSS is a specialist global supplier and exporter of fine chemicals.
How can I request a quote or sample for 4-Butoxybenzonitrile?
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To request a quote or a sample of 4-Butoxybenzonitrile, please contact the Tech Serve Solutions sales team through our website or by phone.
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