4-Cyano-4-(phenylcarbonothioylthio)pentanoic acid
4-Cyano-4-(phenylcarbonothioylthio)pentanoic acid (CAS: 201611-92-9; Formula: C13H13NO2S2; MW: 279.38) is a dithiobenzoate compound supplied by Tech Serve Solutions. This specialist reagent is primarily employed as a chain transfer agent (CTA) in reversible-addition fragmentation chain-transfer (RAFT) polymerization. It is particularly effective for controlling the radical polymerization of methacrylate and methacrylamide monomers, enabling the synthesis of polymers with defined molecular weights and architectures.
- IUPAC
- 4-Cyano-4-(thiobenzoylthio)pentanoic acid

RAFT Polymerization Agent
Utilised as a key chain transfer agent (CTA) in reversible-addition fragmentation chain-transfer (RAFT) polymerization processes. It enables precise control over polymer molecular weight and architecture.
Methacrylate & Methacrylamide Polymerisation
Specifically suited for the controlled radical polymerisation of methacrylate and methacrylamide monomers. This allows for the synthesis of polymers with tailored properties.
Materials Science Research
A valuable reagent for researchers in materials science exploring novel polymer synthesis and advanced material development. Facilitates the creation of polymers with specific functionalities.
Polymer Synthesis
Essential for academic and industrial research requiring controlled polymerisation techniques. Supports the development of new polymers for diverse applications.
| Molecular weight | 279.38 |
|---|---|
| Empirical formula | C13H13NO2S2 |
| Assay | >97% (HPLC) |
| Form | powder |
| Storage temperature | 2-8°C |
| Application | RAFT agent for controlled radical polymerization; especially suited for the polymerization of methacrylate and methacrylamide monomers. Chain Transfer Agent (CTA) |
| Melting point | 94-98 °C |

Hazard statements
- H317May cause an allergic skin reaction
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Water hazard class (WGK, DE) | 1 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 43 |
| 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-Cyano-4-(phenylcarbonothioylthio)pentanoic acid used for?
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This compound functions as a RAFT agent (Chain Transfer Agent) for controlled radical polymerisation, particularly suited for methacrylate and methacrylamide monomers.
What is the CAS number and molecular formula for this product?
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The CAS number is 201611-92-9 and the molecular formula is C13H13NO2S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of >97% (HPLC). TSS does not represent this chemical as USP, BP, EP, or any other pharmacopoeia grade.
What are the safety and handling considerations for this chemical?
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This compound is classified as a Warning (GHS07) and may cause an allergic skin reaction (H317). Wear protective gloves and eye protection (P280, 36/37). Store at 2-8°C.
How is this chemical shipped and exported?
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Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, adhering to all necessary regulations for packaging, shipping, and exporting.
How can I request a sample or quote for 4-Cyano-4-(phenylcarbonothioylthio)pentanoic acid?
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Please contact our sales team or use the online enquiry form to request a sample or a competitive quote.
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