S-Benzyl-L-cysteinol
S-Benzyl-L-cysteinol (CAS: 85803-43-6; Formula: C6H5CH2SCH2CH(NH2)CH2OH) is a chiral amino alcohol derivative with a molecular weight of 197.30 g/mol. It serves as a valuable building block in chemical synthesis, particularly within peptide chemistry and biochemical research. Its specific stereochemistry and functional groups make it suitable for the development of complex molecules and as a tool in chemical biology applications.
- IUPAC
- (R)-2-Amino-3-(benzylthio)-1-propanol

Peptide Synthesis
Used as a modified amino acid in the construction of peptides, enabling the introduction of a benzylthioether side chain for unique structural or functional properties.
Chemical Biology Research
Employed as a probe or building block in studies investigating biological pathways and molecular interactions due to its defined stereochemistry and functional groups.
Organic Synthesis
Acts as a chiral intermediate in the synthesis of complex organic molecules, leveraging its stereospecificity and reactive functionalities.
Drug Discovery and Development
Potential precursor or intermediate in the synthesis of pharmaceutical candidates, contributing to the creation of novel therapeutic agents.
| Molecular weight | 197.30 |
|---|---|
| Linear formula | C6H5CH2SCH2CH(NH2)CH2OH |
| Assay | 97% |
| Optical activity | [α]20/D −49°, c = 1.4 in ethanol |
| Melting point | 42-46 °C(lit.) |
| Flash point | 113 °C / 235.4 °F |
|---|---|
| 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-Benzyl-L-cysteinol used for?
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S-Benzyl-L-cysteinol is primarily used in peptide synthesis, chemical biology research, organic synthesis, and potentially in drug discovery and development as a chiral building block.
What is the CAS number and chemical formula for S-Benzyl-L-cysteinol?
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The CAS number is 85803-43-6, and its linear chemical formula is C6H5CH2SCH2CH(NH2)CH2OH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies S-Benzyl-L-cysteinol with an assay of 97%. This product is intended for research and chemical synthesis purposes and is not supplied as USP, BP, EP, or pharmacopoeia grade.
How should S-Benzyl-L-cysteinol be handled safely?
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S-Benzyl-L-cysteinol is classified under WGK Germany 3. It has a flash point of 113 °C (235.4 °F). Appropriate personal protective equipment should be used, and handling should occur in a well-ventilated area to avoid exposure.
Is S-Benzyl-L-cysteinol a controlled substance?
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The provided data does not indicate that S-Benzyl-L-cysteinol is a controlled substance.
How is S-Benzyl-L-cysteinol packed, shipped, and exported?
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Tech Serve Solutions professionally packs, ships, and exports chemicals globally, adhering to all necessary regulations for safe and compliant transport.
How can I request a sample or quote for S-Benzyl-L-cysteinol?
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To request a sample or a quote for S-Benzyl-L-cysteinol, please contact our sales team through the website or by phone.
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