Cyclopropanecarbonitrile
Cyclopropanecarbonitrile (CAS: 5500-21-0; Formula: C3H5CN; MW: 67.09) is a key organic building block utilised in chemical synthesis. This nitrile compound, featuring a cyclopropane ring, serves as a versatile intermediate. It is a valuable reagent for introducing the cyclopropyl moiety into more complex molecules across various chemical research and development sectors. Its properties make it suitable for applications requiring specific structural elements in organic chemistry.
- IUPAC
- Cyanocyclopropane,Cyclopropyl cyanide
- Synonyms
- CyanocyclopropaneCyclopropyl cyanide

Organic Synthesis Intermediate
Cyclopropanecarbonitrile acts as a crucial intermediate in the synthesis of various organic compounds. Its unique structure allows for the introduction of the cyclopropyl group, which is present in numerous biologically active molecules and materials.
Pharmaceutical Research
This compound can be employed in the development of novel pharmaceutical agents. The cyclopropyl ring is a common feature in many drug molecules, contributing to their metabolic stability and binding affinity.
Agrochemical Development
The cyclopropyl moiety is also found in certain agrochemicals. Cyclopropanecarbonitrile may serve as a precursor in the synthesis of new pesticides or herbicides, contributing to crop protection research.
Materials Science
In materials science, cyclopropanecarbonitrile can be explored as a monomer or building block for specialised polymers or functional materials where the cyclopropyl group imparts unique properties.
| Molecular weight | 67.09 |
|---|---|
| Linear formula | C3H5CN |
| Assay | 98% |
| Boiling point | 135 °C(lit.) |
| Density | 0.911 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.421(lit.) |


Hazard statements
- H226Flammable liquid and vapour
- H301Toxic if swallowed
- H311Toxic in contact with skin
- H315Causes skin irritation
- H319Causes serious eye irritation
- H331Toxic if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P305IF IN EYES
- P311Call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 40 °C / 104 °F |
| Transport (UN / ADR) | UN 3275 6.1/PG 2 |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | T |
| Risk statements (R) | 10-23/24/25-36/37/38 |
| Safety statements (S) | 23-26-36/37-45 |
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 Cyclopropanecarbonitrile used for?
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Cyclopropanecarbonitrile is primarily used as an intermediate in organic synthesis, particularly in the development of pharmaceuticals, agrochemicals, and novel materials where the cyclopropyl moiety is desired.
What is the CAS number and chemical formula for Cyclopropanecarbonitrile?
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The CAS number is 5500-21-0, and the linear chemical formula is C3H5CN.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions typically supplies Cyclopropanecarbonitrile with an assay of 98%. We do not represent this product as USP, BP, EP, or any other pharmacopoeial grade.
How should Cyclopropanecarbonitrile be handled safely?
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Cyclopropanecarbonitrile is a flammable liquid and vapour (H226), toxic if swallowed, in contact with skin, or if inhaled (H301, H311, H331), and causes skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment including eyeshields, face shields, chemical-resistant gloves, and a suitable respirator. Ensure adequate ventilation and avoid ignition sources.
Is Cyclopropanecarbonitrile a controlled substance?
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Based on the provided data, there is no indication that Cyclopropanecarbonitrile is a controlled substance. However, customers should verify local regulations.
How is Cyclopropanecarbonitrile packed, shipped, and exported?
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Tech Serve Solutions expertly packs, ships, and exports fine chemicals globally, adhering to all relevant transport and customs regulations. Specific packaging details are available upon request.
How can I request a sample or quote for Cyclopropanecarbonitrile?
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To request a sample or a quote for Cyclopropanecarbonitrile, please contact our sales team through our website or by calling our customer service line. Please reference the product name and CAS number.
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