| CAS No. | 338954-11-3 |
| Molecular Formula | C19H21FN4O2S2 |
| Molecular Weight | 420.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
The occurrence of N-(1-(4-ethyl-5-(methylthio)-4H-1,2,4-triazol-3-yl)-2-phenylethyl)-4-fluorobenzenesulfonamide is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
N-(1-(4-ethyl-5-(methylthio)-4H-1,2,4-triazol-3-yl)-2-phenylethyl)-4-fluorobenzenesulfonamide (CAS 338954-11-3), molecular formula C19H21FN4O2S2 and molecular weight 420.52 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of N-(1-(4-ethyl-5-(methylthio)-4H-1,2,4-triazol-3-yl)-2-phenylethyl)-4-fluorobenzenesulfonamide (C19H21FN4O2S2) is characterized by a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. 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. 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), N-(1-(4-ethyl-5-(methylthio)-4H-1,2,4-triazol-3-yl)-2-phenylethyl)-4-fluorobenzenesulfonamide 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 | C19H21FN4O2S2 |
| Molecular Weight | 420.52 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |