2-Chlorocyclopentanone
2-Chlorocyclopentanone (CAS: 694-28-0), with the molecular formula ClC5H7(=O) and a molecular weight of 118.56 g/mol, is a halogenated cyclic ketone. This compound serves as a valuable building block in organic synthesis, particularly for creating more complex molecular structures. Its reactivity makes it useful in the preparation of various chemical intermediates and target molecules within research and development settings.

Organic Synthesis Intermediate
2-Chlorocyclopentanone is utilised as a key intermediate in the synthesis of diverse organic compounds. Its functional groups allow for various chemical transformations, enabling the construction of complex molecular architectures.
Chemical Research and Development
This compound is employed in academic and industrial research laboratories for exploring new synthetic routes and developing novel chemical entities. Its well-defined structure facilitates predictable reaction outcomes.
Building Block for Heterocycles
The structure of 2-Chlorocyclopentanone makes it suitable for incorporation into heterocyclic ring systems, which are prevalent in pharmaceuticals and agrochemicals.
| Molecular weight | 118.56 |
|---|---|
| Linear formula | ClC5H7(=O) |
| Assay | 98% |
| Boiling point | 72-74 °C/12 mmHg(lit.) |
| Density | 1.185 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.474(lit.) |
| Storage temperature | 2-8°C |
| Contains / stabiliser | calcium carbonate as stabilizer |

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 | 77 °C / 170.6 °F |
| Transport (UN / ADR) | UN 2810 6.1/PG 3 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 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 2-Chlorocyclopentanone used for?
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2-Chlorocyclopentanone is primarily used as a building block and intermediate in organic synthesis and chemical research and development, enabling the creation of more complex molecular structures.
What are the CAS number and formula for 2-Chlorocyclopentanone?
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The CAS number for 2-Chlorocyclopentanone is 694-28-0, and its molecular formula is ClC5H7(=O).
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Chlorocyclopentanone with an assay of 98%. This product is supplied for research and laboratory use and is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should 2-Chlorocyclopentanone be handled safely?
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2-Chlorocyclopentanone is a Warning substance that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator. Ensure good ventilation.
How is 2-Chlorocyclopentanone packed and shipped?
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2-Chlorocyclopentanone is carefully packed to ensure safe transport and is exported globally by Tech Serve Solutions, adhering to all relevant shipping regulations for hazardous materials (UN 2810).
How can I request a quote or sample for 2-Chlorocyclopentanone?
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To request a quote or sample of 2-Chlorocyclopentanone, please contact the Tech Serve Solutions sales team through our website or by phone.
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