| CAS No. | 252980-64-6 |
| Molecular Formula | C4H8ClF3O3SSi |
| Molecular Weight | 256.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 256.70 g/mol gives Trifluoro-methanesulfonic acid (chloromethyl)dimethylsilyl ester distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Trifluoro-methanesulfonic acid (chloromethyl)dimethylsilyl ester (CAS 252980-64-6), molecular formula C4H8ClF3O3SSi and molecular weight 256.70 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Trifluoro-methanesulfonic acid (chloromethyl)dimethylsilyl ester (C4H8ClF3O3SSi) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of -1.0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 256.70 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), Trifluoro-methanesulfonic acid (chloromethyl)dimethylsilyl ester 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 | C4H8ClF3O3SSi |
| Molecular Weight | 256.70 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | -1.0 |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Sulfur Atoms | 1 |