p-Toluenesulfonyl cyanide
p-Toluenesulfonyl cyanide (CAS 19158-51-1), molecular formula CH3C6H4SO2CN, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- p-Tolylsulfonyl cyanide,Tosyl cyanide

| Molecular weight | 181.21 |
|---|---|
| Linear formula | CH3C6H4SO2CN |
| Assay | 95% |
| Grade | technical grade |
| Boiling point | 105-106 °C/1 mmHg(lit.) |
| Storage temperature | 2-8°C |
| Application | p-Toluenesulfonyl cyanide has been used in:• the preparation of polyfunctional nitriles1• free-radical cyanation of B-alkylcatecholboranes2 |
| Melting point | 47-50 °C(lit.) |


Hazard statements
- H312Harmful in contact with skin
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Flash point | 110 °C / 230 °F |
| Transport (UN / ADR) | UN 3261 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 20/21-34 |
| Safety statements (S) | 26-27-28-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS 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 p-Toluenesulfonyl cyanide?
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p-Toluenesulfonyl cyanide (CAS 19158-51-1), molecular formula CH3C6H4SO2CN, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of p-Toluenesulfonyl cyanide does Tech Serve Solutions supply?
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Tech Serve Solutions supplies p-Toluenesulfonyl cyanide in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of p-Toluenesulfonyl cyanide?
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p-Toluenesulfonyl cyanide has CAS number 19158-51-1 and molecular formula CH3C6H4SO2CN. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for p-Toluenesulfonyl cyanide?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of p-Toluenesulfonyl cyanide ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should p-Toluenesulfonyl cyanide be stored?
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Store p-Toluenesulfonyl cyanide in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is p-Toluenesulfonyl cyanide used for?
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p-Toluenesulfonyl cyanide is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for p-Toluenesulfonyl cyanide?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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