4-Formylbenzonitrile
4-Formylbenzonitrile (CAS: 105-07-7), with the molecular formula C8H5NO and a molar mass of 131.13 g/mol, is a valuable organic compound. It functions as a key building block in chemical synthesis, particularly within the realm of carbonyl compounds and aromatic aldehydes. Its structure, featuring both an aldehyde and a nitrile group, allows for diverse reactivity in organic transformations. This compound is primarily utilised in the development of more complex molecules for research and industrial applications.
- IUPAC
- 4-Cyanobenzaldehyde
- Synonyms
- 4-Cyanobenzaldehyde

Synthesis of Heterocyclic Compounds
4-Formylbenzonitrile has been employed in the synthesis of complex heterocyclic systems, such as triazolo[3,4-a]isoquinoline derivatives. These structures can be of interest in medicinal chemistry research for their potential biological activities.
Precursor for Organic Intermediates
The compound serves as a precursor for various organic intermediates. For instance, it can be reacted to form derivatives like 4-(phenylhydrazonomethyl)benzonitrile, showcasing its utility in constructing specific molecular frameworks.
Research and Development in Organic Synthesis
As a functionalised benzonitrile, 4-Formylbenzonitrile is a useful reagent in academic and industrial research laboratories. It enables chemists to explore new synthetic routes and develop novel organic molecules.
| Molecular weight | 131.13 |
|---|---|
| Linear formula | NCC6H4CHO |
| Assay | ≥97.0% (T) |
| Grade | purum |
| Boiling point | 133 °C/12 mmHg(lit.) |
| Application | 4-Formylbenzonitrile has been used in the synthesis of:• 4-(5-phenyl-1,2,4-triazolo[3,4-a]isoquinolin-3-yl)benzonitrile1• 4-(phenylhydrazonomethyl)benzonitrile2 |
| Melting point | 100-102 °C(lit.)100-102 °C |

Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H332Harmful if inhaled
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22 |
| Safety statements (S) | 36/37 |
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 4-Formylbenzonitrile used for?
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4-Formylbenzonitrile is primarily used as a building block in organic synthesis for the creation of more complex molecules, including heterocyclic compounds and various organic intermediates. It is valuable in research and development for exploring new chemical pathways.
What are the CAS number and formula for 4-Formylbenzonitrile?
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The CAS number for 4-Formylbenzonitrile is 105-07-7, and its molecular formula is C8H5NO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Formylbenzonitrile with a purity of ≥97.0% (T) and a 'purum' grade. We do not represent this product as USP, BP, or EP grade unless explicitly stated in the product data.
How should 4-Formylbenzonitrile be handled safely?
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4-Formylbenzonitrile is classified with GHS07 and carries a Warning signal word. It has hazard statements H302, H312, and H332, indicating it is harmful if swallowed, in contact with skin, or if inhaled. Appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves, should be used, along with safety statements 36/37.
How is 4-Formylbenzonitrile supplied and exported?
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Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 4-Formylbenzonitrile, serving the needs of research and industrial clients worldwide.
How can I request a quote or sample of 4-Formylbenzonitrile?
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To request a quote or a sample of 4-Formylbenzonitrile, please contact our sales team through the website or by phone. Our experts will be pleased to assist you with your inquiry.
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