| CAS No. | 381241-82-3 |
| Molecular Formula | C9H11ClFNO2S |
| Molecular Weight | 251.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 251.71 g/mol gives N-(2-chloroethyl)-5-fluoro-2-methylbenzenesulfonamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
N-(2-chloroethyl)-5-fluoro-2-methylbenzenesulfonamide (CAS 381241-82-3), molecular formula C9H11ClFNO2S and molecular weight 251.71 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of N-(2-chloroethyl)-5-fluoro-2-methylbenzenesulfonamide (C9H11ClFNO2S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine 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-(2-chloroethyl)-5-fluoro-2-methylbenzenesulfonamide 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 | C9H11ClFNO2S |
| Molecular Weight | 251.71 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |