| CAS No. | 57233-96-2 |
| Molecular Formula | C5H2BrIO2S |
| Molecular Weight | 332.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 332.94 g/mol gives 4-Bromo-5-iodothiophene-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4-Bromo-5-iodothiophene-3-carboxylic acid (CAS 57233-96-2), a certified reference material (molecular formula C5H2BrIO2S, MW 332.94 g/mol) for analytical method development and quality control.
4-Bromo-5-iodothiophene-3-carboxylic acid (C5H2BrIO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine/iodine substitution. 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 4-Bromo-5-iodothiophene-3-carboxylic acid 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 | C5H2BrIO2S |
| Molecular Weight | 332.94 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Br/I-containing |
| Sulfur Atoms | 1 |