4-Butoxybenzoyl chloride
4-Butoxybenzoyl chloride (CAS: 33863-86-4) is an organic compound with the linear formula CH3(CH2)3OC6H4COCl and a molecular weight of 212.67 g/mol. This acid halide serves as a valuable building block in organic synthesis. It is primarily utilised in the creation of more complex molecules, contributing a butoxybenzoyl moiety. Its reactive acyl chloride group allows for facile derivatisation in various chemical transformations.

Synthesis of Complex Organic Molecules
4-Butoxybenzoyl chloride acts as an intermediate in the synthesis of various organic compounds. Its reactive acyl chloride functionality enables straightforward acylation reactions.
Research and Development
This compound is employed in research laboratories for the development of new chemical entities. It can be used to introduce the 4-butoxybenzoyl group into target molecules.
Pharmaceutical Intermediate
As a building block, 4-Butoxybenzoyl chloride may find application in the multi-step synthesis pathways of pharmaceutical active ingredients or related compounds.
| Molecular weight | 212.67 |
|---|---|
| Linear formula | CH3(CH2)3OC6H4COCl |
| Assay | 99% |
| Boiling point | 160 °C/8 mmHg(lit.) |
| Density | 1.122 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.5495(lit.) |
| Application | 4-Butoxybenzoyl chloride was used in the synthesis of 2,3-dihydro-2-(1-(4-(butoxyphenylcarbonyl)amino)-phenethyl)-1,4-dithiin-1,1,4,4-tetroxide1. |


Hazard statements
- H314Causes severe skin burns and eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Transport (UN / ADR) | UN 3265 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34-36/37 |
| Safety statements (S) | 26-27-28-36/37/39-45 |
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-Butoxybenzoyl chloride used for?
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4-Butoxybenzoyl chloride is used as a building block in organic synthesis, particularly for introducing the 4-butoxybenzoyl group into other molecules, and has been cited in the synthesis of complex organic compounds.
What is the CAS number and chemical formula for 4-Butoxybenzoyl chloride?
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The CAS number is 33863-86-4 and the linear chemical formula is CH3(CH2)3OC6H4COCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Butoxybenzoyl chloride with an assay of 99%. We do not represent this product as USP, BP, EP, or other pharmacopoeia grades unless explicitly stated in the product data.
How should 4-Butoxybenzoyl chloride be handled safely?
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4-Butoxybenzoyl chloride is corrosive and can cause severe skin burns and eye damage, and may cause respiratory irritation. Handle with appropriate personal protective equipment, including gloves, eye protection, and respiratory protection in well-ventilated areas. Refer to the safety data sheet for comprehensive handling instructions.
Is 4-Butoxybenzoyl chloride shipped internationally?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 4-Butoxybenzoyl chloride.
How can I request a quote or sample for 4-Butoxybenzoyl chloride?
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To request a quote or sample, please contact our sales team through the website or by phone, providing the product name and CAS number (33863-86-4).
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