Cyclobutanecarbonyl chloride
Cyclobutanecarbonyl chloride (CAS 5006-22-4), with the linear formula C4H7COCl and a molecular weight of 118.56 g/mol, is a reactive acid halide. It serves as a valuable building block in organic synthesis, facilitating the introduction of the cyclobutanecarbonyl moiety into various molecules. This compound is essential for creating more complex organic structures and is employed in research and development laboratories for custom synthesis projects.
- IUPAC
- Cyclobutancarboxylic acid chloride

Organic Synthesis Intermediate
Utilised as a key intermediate for introducing the cyclobutanecarbonyl group into diverse organic molecules. It enables the construction of novel chemical entities for research and development purposes.
Pharmaceutical Research
A building block employed in the early stages of drug discovery and development to synthesise potential therapeutic agents. Its unique structure can be incorporated into lead compounds.
Fine Chemical Manufacturing
Serves as a precursor in the multi-step synthesis of specialised fine chemicals. Its reactivity allows for controlled derivatisation in complex synthetic pathways.
| Molecular weight | 118.56 |
|---|---|
| Linear formula | C4H7COCl |
| Assay | 98% |
| Boiling point | 60 °C/50 mmHg(lit.) |
| Density | 1.039 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.455(lit.) |
| Storage temperature | 2-8°C |


Hazard statements
- H226Flammable liquid and vapour
- H314Causes severe skin burns and eye damage
Precautionary statements
- 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 | 37 °C / 98.6 °F |
| Transport (UN / ADR) | UN 2920 3(8) / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 10-34 |
| Safety statements (S) | 26-36/37/39-45 |
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 Cyclobutanecarbonyl chloride used for?
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Cyclobutanecarbonyl chloride is primarily used as an intermediate and building block in organic synthesis, particularly for introducing the cyclobutanecarbonyl group into other molecules for research and development in areas like pharmaceutical and fine chemical manufacturing.
What is the CAS number and formula for Cyclobutanecarbonyl chloride?
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The CAS number for Cyclobutanecarbonyl chloride is 5006-22-4 and its linear formula is C4H7COCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cyclobutanecarbonyl chloride with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
How should Cyclobutanecarbonyl chloride be handled safely?
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Cyclobutanecarbonyl chloride is classified as a Danger. It is flammable (H226) and causes severe skin burns and eye damage (H314). Handle with appropriate personal protective equipment, including gloves, goggles, and a full-face respirator. Ensure adequate ventilation and store at 2-8°C.
Is Cyclobutanecarbonyl chloride a controlled substance?
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Based on the provided data, Cyclobutanecarbonyl chloride is not listed as a controlled substance.
How is Cyclobutanecarbonyl chloride shipped and exported?
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Cyclobutanecarbonyl chloride is shipped and exported under UN 2920, Hazard Class 3 (Flammable Liquids) with subsidiary risk 8 (Corrosive), Packing Group II. Shipping and export are handled in compliance with international regulations.
How can I request a quote or sample of Cyclobutanecarbonyl chloride?
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To request a quote or sample of Cyclobutanecarbonyl chloride, please contact our sales department through the website or by phone, referencing product CAS 5006-22-4.
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