Cyclopentanecarbonitrile
Cyclopentanecarbonitrile (CAS: 4254-02-8; Formula: C5H9CN; Molar Mass: 95.14 g/mol) is an organic nitrile compound characterised by a nitrile group attached to a cyclopentane ring. It serves as a versatile building block in organic synthesis. Its primary applications lie in chemical research and the development of more complex molecules, particularly within the pharmaceutical and specialty chemical industries. TSS supplies this chemical with a high assay for demanding synthetic applications.
- IUPAC
- Cyanocyclopentane,Cyclopentyl cyanide
- Synonyms
- Cyclopentyl cyanideCyanocyclopentane

Organic Synthesis
Utilised as a key intermediate and building block in the synthesis of complex organic molecules. Its nitrile functionality can be transformed into various other functional groups, making it valuable for constructing diverse chemical structures.
Pharmaceutical Research
A useful synthon in the development of novel pharmaceutical compounds. It can be incorporated into molecular frameworks aimed at creating new therapeutic agents.
Specialty Chemicals
Employed in the creation of various specialty chemicals where a cyclopentane ring and a reactive nitrile group are required structural features.
| Molecular weight | 95.14 |
|---|---|
| Linear formula | C5H9CN |
| Assay | 98% |
| Grade | purum |
| Boiling point | 67-68 °C/10 mmHg(lit.) |
| Density | 0.912 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.441(lit.) |
| Melting point | −76 °C(lit.) |


Hazard statements
- H226Flammable liquid and vapour
- H301Toxic if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 56 °C / 132.8 °F |
| Transport (UN / ADR) | UN 1992 3/PG 3 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 25-36/37/38n20/D 1.442 |
| Safety statements (S) | 26-45 |
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 Cyclopentanecarbonitrile used for?
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Cyclopentanecarbonitrile is primarily used as a building block in organic synthesis, particularly in pharmaceutical research and the development of specialty chemicals.
What is the CAS number and chemical formula for Cyclopentanecarbonitrile?
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The CAS number for Cyclopentanecarbonitrile is 4254-02-8, and its chemical formula is C5H9CN.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cyclopentanecarbonitrile with a purity of 98% (purum grade).
How should Cyclopentanecarbonitrile be handled safely?
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Cyclopentanecarbonitrile is flammable and toxic. It causes skin and serious eye irritation, and may cause respiratory irritation. Handle with appropriate personal protective equipment, including gloves, eye protection, and respiratory protection, in a well-ventilated area. Refer to the safety data sheet for full details.
How is Cyclopentanecarbonitrile packaged and exported?
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Tech Serve Solutions exports chemicals globally, ensuring appropriate packaging for safe transport according to international regulations. Specific packaging details are confirmed upon order.
How can I request a quote or sample for Cyclopentanecarbonitrile?
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To request a quote or sample, please contact our sales team through the TSS website or via direct inquiry, providing the product name and CAS number (4254-02-8).
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