L-Cystine bisallyl ester di(p-toluenesulfonate) salt
L-Cystine bis(allyl ester) di(p-toluenesulfonate) salt (CAS: 142601-71-6) is a derivative of the amino acid cystine, featuring allyl ester functional groups and p-toluenesulfonate counterions. With a molecular weight of 664.83 g/mol, this compound serves as a building block in chemical synthesis, particularly within peptide chemistry and chemical biology research. Its specific structure makes it valuable for investigating and creating novel biomolecules and therapeutic agents.

Peptide Synthesis
Utilised as a modified amino acid derivative in the synthesis of peptides and peptidomimetics. The allyl ester groups offer orthogonal protection strategies.
Chemical Biology Research
Serves as a tool compound for probing biological systems and developing new chemical probes. Its unique structure can be leveraged for activity-based protein profiling.
Materials Science
Potential applications in the development of novel polymers or functional materials where cystine units can impart specific properties.
Organic Synthesis Intermediate
Acts as a versatile intermediate for the preparation of more complex organic molecules. The tosylate counterions can influence solubility and reactivity.
| Molecular weight | 664.83 |
|---|---|
| Linear formula | CH2=CHCH2OCOCH(NH2)CH2SSCH2CH(NH2)COOCH2CH=CH2.2C7H8O3S |
| Assay | ≥95.0% (sum of enantiomers, TLC) |
| Optical activity | [α]20/D −11.5±1°, c = 3% in methanol |
| Melting point | 175-180 °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 L-Cystine bis(allyl ester) di(p-toluenesulfonate) salt used for?
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This compound is primarily used in peptide synthesis, chemical biology research, and as an intermediate in organic synthesis. It can serve as a building block for creating novel biomolecules and materials.
What is the CAS number and molecular formula?
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The CAS number is 142601-71-6. The linear molecular formula is CH2=CHCH2OCOCH(NH2)CH2SSCH2CH(NH2)COOCH2CH=CH2.2C7H8O3S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of ≥95.0% (sum of enantiomers, TLC). TSS does not represent this product as USP, BP, EP, or pharmacopoeia grade.
How should L-Cystine bis(allyl ester) di(p-toluenesulfonate) salt be handled?
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Handling requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. Refer to the Safety Data Sheet for detailed guidance.
Is this chemical a controlled substance?
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The provided data does not indicate that this chemical is a controlled substance.
How is this product packed and shipped?
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Products are packed and shipped according to international regulations for chemical substances. Please contact us for specific export inquiries.
How can I request a sample or quote?
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You can request a sample or a quote by contacting our sales team through the website or by calling us directly.
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