Benzenesulfonyl cyanide
Benzenesulfonyl cyanide (CAS: 24224-99-5, Formula: C7H5NO2S) is a chemical compound with a molecular weight of 167.19 g/mol. This organosulfur compound serves as a valuable building block in organic synthesis. It is particularly useful in the creation of more complex molecules within the pharmaceutical and chemical industries, leveraging its reactive cyanide and sulfonyl functional groups.
- IUPAC
- Phenylsulfonyl cyanide

Organic Synthesis
Benzenesulfonyl cyanide is a versatile reagent employed in various organic transformations. Its functional groups allow for the introduction of specific moieties into larger molecular structures.
Chemical Intermediate
It acts as a key intermediate in the synthesis of diverse organic compounds. Its application is noted in the development of novel chemical entities and functional materials.
Research and Development
Utilised in academic and industrial research settings for exploring new synthetic routes and developing novel compounds. It is a useful tool for chemists investigating sulfur and cyanide chemistry.
| Molecular weight | 167.19 |
|---|---|
| Empirical formula | C7H5NO2S |
| Assay | ≥98.0% (HPLC) |
| Grade | technical |
| Density | 1.274 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.531 |

Hazard statements
- H301Toxic if swallowed
- H311Toxic in contact with skin
- H331Toxic if inhaled
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- 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 |
|---|---|
| Transport (UN / ADR) | UN 2810 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 23/24/25 |
| Safety statements (S) | 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 Benzenesulfonyl cyanide used for?
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Benzenesulfonyl cyanide is primarily used as a building block in organic synthesis and as a chemical intermediate in the creation of more complex organic compounds for research and development purposes.
What are the CAS number and formula for Benzenesulfonyl cyanide?
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The CAS number for Benzenesulfonyl cyanide is 24224-99-5, and its molecular formula is C7H5NO2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Benzenesulfonyl cyanide in technical grade with an assay of ≥98.0% (HPLC). We do not represent this product as USP, BP, or EP grade.
How should Benzenesulfonyl cyanide be handled?
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Benzenesulfonyl cyanide is a Danger substance (GHS06) and is toxic if swallowed, in contact with skin, or if inhaled (H301-H311-H331). Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and suitable respiratory protection, must be used. Handle only in a well-ventilated area or under a fume hood.
Is Benzenesulfonyl cyanide a controlled substance?
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The provided data does not indicate that Benzenesulfonyl cyanide is a scheduled or controlled substance. However, users should always verify local regulations.
How is Benzenesulfonyl cyanide packed, shipped, and exported?
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Benzenesulfonyl cyanide is shipped according to UN 2810 classification (6.1/PGIII). Tech Serve Solutions is experienced in global export procedures for hazardous chemicals.
How can I request a sample or quote for Benzenesulfonyl cyanide?
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To request a sample or a quote for Benzenesulfonyl cyanide, please contact our sales department through the website or by phone, referencing the product name and CAS number.
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