S,S′-Trimethylene di(p-toluenethiosulfonate)
S,S′-Trimethylene di(p-toluenethiosulfonate) (CAS 3866-79-3) is an organic sulfur compound with the molecular formula CH₃C₆H₄SO₂SCH₂CH₂CH₂SSO₂C₆H₄CH₃ and a molecular weight of 416.60 g/mol. This tosylate derivative is primarily used as a chemical intermediate and building block in organic synthesis. Its specific structure allows for its incorporation into various molecular frameworks during chemical research and development.
- IUPAC
- 1,3-Di(p-tosylthio)propane,1,3-Propanediyl di(thiotosylate),Trimethylene di(thiotosylate)
- Synonyms
- 1,3-Di(p-tosylthio)propane1,3-Propanediyl di(thiotosylate)Trimethylene di(thiotosylate)

Organic Synthesis Building Block
This compound serves as a valuable building block in the synthesis of complex organic molecules. Its functional groups enable participation in various coupling and derivatization reactions within research laboratories.
Intermediate for Specialty Chemicals
S,S′-Trimethylene di(p-toluenethiosulfonate) can be utilised as an intermediate in the preparation of specialised sulphur-containing organic compounds. These compounds may find applications in diverse chemical sectors.
Reagent in Chemical Research
The unique thiosulfonate structure makes it a useful reagent for chemists exploring novel reaction pathways and developing new synthetic methodologies in academic and industrial research.
| Molecular weight | 416.60 |
|---|---|
| Linear formula | CH3C6H4SO2SCH2CH2CH2SSO2C6H4CH3 |
| Assay | ≥97.0% (HPLC) |
| Melting point | 64-67 °C |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
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 S,S′-Trimethylene di(p-toluenethiosulfonate) used for?
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S,S′-Trimethylene di(p-toluenethiosulfonate) is primarily used as a building block and intermediate in organic synthesis and chemical research.
What is the CAS number and formula for S,S′-Trimethylene di(p-toluenethiosulfonate)?
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The CAS number is 3866-79-3, and the linear formula is CH₃C₆H₄SO₂SCH₂CH₂CH₂SSO₂C₆H₄CH₃.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies S,S′-Trimethylene di(p-toluenethiosulfonate) with an assay of ≥97.0% (HPLC). This is a research grade chemical and is not represented as USP, BP, or EP.
What are the safety considerations when handling S,S′-Trimethylene di(p-toluenethiosulfonate)?
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Appropriate personal protective equipment, including eyeshields and gloves, should be used. A respirator filter, such as type N95 (US) or type P1 (EN143), may be necessary. The compound is classified under WGK Germany 3, indicating a high hazard to water.
How is S,S′-Trimethylene di(p-toluenethiosulfonate) typically packed and exported?
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Tech Serve Solutions, as a specialist global supplier and exporter, ensures appropriate packaging for the safe transit of chemicals like S,S′-Trimethylene di(p-toluenethiosulfonate) for international distribution.
How can I request a quote or sample?
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To request a quote or a sample of S,S′-Trimethylene di(p-toluenethiosulfonate), please contact the Tech Serve Solutions sales team through our official channels.
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