Cyclopropyl methyl ketone
Cyclopropyl methyl ketone (CAS: 765-43-5) is a clear liquid with the molecular formula C4H6O and a molecular weight of 84.12 g/mol. This versatile organic building block is primarily utilised in chemical synthesis, serving as a key intermediate in the production of more complex molecules. Its ketone functionality and cyclopropyl ring make it a valuable component in various research and development applications within the chemical industry.
- IUPAC
- Acetylcyclopropane
- Synonyms
- Acetylcyclopropane

Organic Synthesis Intermediate
Cyclopropyl methyl ketone acts as a fundamental building block in organic chemistry. It is employed in the synthesis of diverse organic compounds, contributing its cyclopropyl and acetyl functionalities to novel molecular structures.
Pharmaceutical Research
This compound finds application in the research and development of new pharmaceutical agents. Its unique structural features can be incorporated into potential drug candidates for various therapeutic areas.
Fine Chemical Manufacturing
As a valuable intermediate, cyclopropyl methyl ketone is used in the fine chemical sector for the production of specialised chemicals. It serves as a precursor for a range of fine chemical products.
| Molecular weight | 84.12 |
|---|---|
| Linear formula | C3H5COCH3 |
| Assay | ≥98.0% (GC) |
| Boiling point | 114 °C(lit.) |
| Density | 0.849 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.424(lit.)n20/D 1.425 |

Hazard statements
- H225Highly flammable liquid and vapour
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 21 °C / 69.8 °F |
| Transport (UN / ADR) | UN 1224BE 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F |
| Risk statements (R) | 11 |
| Safety statements (S) | 9-16-29-33 |
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 cyclopropyl methyl ketone used for?
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Cyclopropyl methyl ketone is used as a versatile building block and intermediate in organic synthesis, particularly in pharmaceutical research and fine chemical manufacturing.
What is the CAS number and chemical formula for cyclopropyl methyl ketone?
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The CAS number for cyclopropyl methyl ketone is 765-43-5 and its linear formula is C4H6O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies cyclopropyl methyl ketone with an assay of ≥98.0% (GC). We do not represent this product as USP, BP, EP, or pharmacopoeia grade.
What are the safety considerations for cyclopropyl methyl ketone?
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Cyclopropyl methyl ketone is a flammable liquid and vapour (H225). It requires handling with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, and should be kept away from ignition sources. Always consult the Safety Data Sheet (SDS) before use.
How is cyclopropyl methyl methyl ketone packed, shipped, and exported?
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Cyclopropyl methyl ketone is packed in compliance with safety regulations for flammable liquids and is available for global export by Tech Serve Solutions.
How can I request a sample or quote for cyclopropyl methyl ketone?
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To request a sample or a quote for cyclopropyl methyl ketone, please contact our sales team through the website or by phone.
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