| CAS No. | 7762-89-2 |
| Molecular Formula | C4H9BrO3S |
| Molecular Weight | 217.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 217.08 g/mol gives 4-Bromobutane-1-sulfonic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Bromobutane-1-sulfonic acid (CAS 7762-89-2), molecular formula C4H9BrO3S and molecular weight 217.08 g/mol, is a CATO reference standard with documented purity and traceability.
4-Bromobutane-1-sulfonic acid (C4H9BrO3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
| Molecular Formula | C4H9BrO3S |
| Molecular Weight | 217.08 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) | 0.0 |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |