2-Methylcyclopentanone
2-Methylcyclopentanone (CAS: 1120-72-5, Formula: C6H10O, MW: 98.14) is a cyclic ketone characterized by a methyl group attached to the cyclopentanone ring. It is a colourless liquid with a refractive index of 1.435 (n20/D) and a boiling point of 139 °C. This compound serves as a valuable building block in organic synthesis, contributing to the creation of more complex molecular structures in various chemical processes.

Organic Synthesis Intermediate
2-Methylcyclopentanone is utilised as a key intermediate in the synthesis of diverse organic compounds. Its reactive carbonyl group and cyclic structure make it suitable for various chemical transformations, enabling the construction of more intricate molecules.
Chemical Research and Development
This compound finds application in research laboratories for the development of new synthetic methodologies and the exploration of novel chemical entities. Its well-defined chemical properties support its use in academic and industrial R&D settings.
Building Block for Fine Chemicals
As a functionalised cyclic ketone, 2-Methylcyclopentanone acts as a fundamental building block for the production of fine chemicals. It is incorporated into synthetic pathways to introduce specific structural motifs.
| Molecular weight | 98.14 |
|---|---|
| Linear formula | CH3C5H7(=O) |
| Assay | 98% |
| Boiling point | 139 °C(lit.) |
| Density | 0.917 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.435(lit.) |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 26 °C / 78.8 °F |
| Transport (UN / ADR) | UN 1224C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Risk statements (R) | 10 |
| Safety statements (S) | 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 2-Methylcyclopentanone used for?
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2-Methylcyclopentanone is primarily used as a versatile intermediate and building block in organic synthesis, particularly in the chemical and pharmaceutical industries for the creation of complex organic molecules.
What is the CAS number and chemical formula for 2-Methylcyclopentanone?
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The CAS number for 2-Methylcyclopentanone is 1120-72-5, and its chemical formula is C6H10O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Methylcyclopentanone with a minimum assay of 98%. We do not represent this product as USP, BP, or EP grade.
What are the main hazards associated with 2-Methylcyclopentanone?
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2-Methylcyclopentanone is a flammable liquid and vapour (H226). It requires careful handling in well-ventilated areas, away from ignition sources, using appropriate personal protective equipment including safety glasses and gloves.
How is 2-Methylcyclopentanone packed, shipped, and exported?
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2-Methylcyclopentanone is carefully packed according to international shipping regulations for flammable liquids and is exported globally by Tech Serve Solutions.
How can I request a quote or sample for 2-Methylcyclopentanone?
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To request a quote or a sample of 2-Methylcyclopentanone, please contact the Tech Serve Solutions sales team through our website or by phone.
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