| CAS No. | 1309781-40-5 |
| Molecular Formula | C18H25N3O8S |
| Molecular Weight | 443.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
The occurrence of S-[2-Hydroxy-1-(4-hydroxyphenyl)ethyl]-L-glutathione is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
S-[2-Hydroxy-1-(4-hydroxyphenyl)ethyl]-L-glutathione (CAS 1309781-40-5), molecular formula C18H25N3O8S and molecular weight 443.47 g/mol, is a CATO reference standard with documented purity and traceability.
S-[2-Hydroxy-1-(4-hydroxyphenyl)ethyl]-L-glutathione (C18H25N3O8S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), S-[2-Hydroxy-1-(4-hydroxyphenyl)ethyl]-L-glutathione 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.
| Molecular Formula | C18H25N3O8S |
| Molecular Weight | 443.47 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |