L-Cysteic Acid Monohydrate CAS 23537-25-9
| CAS No. | 23537-25-9 |
| Molecular Formula | C3H7NO5S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 187.17 g/mol gives L-Cysteic Acid Monohydrate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
L-Cysteic Acid Monohydrate (CAS 23537-25-9) is a high-purity analytical reference standard with the molecular formula C3H7NO5SH2O and a molecular weight of 187.17 g/mol.
The molecular framework of L-Cysteic Acid Monohydrate (C3H7NO5SH2O) is characterized by an amide group, a sulfone group, a carboxylic acid group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), L-Cysteic Acid Monohydrate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C3H7NO5S H2O |
| Molecular Weight | 187.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 0.0 |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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