L-Cysteic acid monohydrate
L-Cysteic acid monohydrate (CAS 23537-25-9), molecular formula HO3SCH2CH(NH2)CO2H·H2O, 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
- (R)-2-Amino-3-sulfopropionic acid

| Molecular weight | 187.17 |
|---|---|
| Linear formula | HO3SCH2CH(NH2)CO2H·H2O |
| Assay | ≥99.0% (T) |
| Solubility | H2O: soluble |
| Optical activity | [α]20/D +7.5±0.5°, c = 5% in H2O |
| Application | Internal standard for amino acid analysis.1 |
| Melting point | 267 °C (dec.)(lit.) |
| 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
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 L-Cysteic acid monohydrate?
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L-Cysteic acid monohydrate (CAS 23537-25-9), molecular formula HO3SCH2CH(NH2)CO2H·H2O, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of L-Cysteic acid monohydrate does Tech Serve Solutions supply?
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Tech Serve Solutions supplies L-Cysteic acid monohydrate 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 L-Cysteic acid monohydrate?
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L-Cysteic acid monohydrate has CAS number 23537-25-9 and molecular formula HO3SCH2CH(NH2)CO2H·H2O. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for L-Cysteic acid monohydrate?
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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 L-Cysteic acid monohydrate 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 L-Cysteic acid monohydrate be stored?
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Store L-Cysteic acid monohydrate 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 L-Cysteic acid monohydrate used for?
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L-Cysteic acid monohydrate 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 L-Cysteic acid monohydrate?
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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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