(4-bromo-5-methylthiophen-2-yl)boronic acid CAS 154566-69-5
| CAS No. | 154566-69-5 |
| Molecular Formula | C5H10BBrO2S |
| Molecular Weight | 224.91 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(4-bromo-5-methylthiophen-2-yl)boronic acid (CAS 154566-69-5), molecular formula C5H10BBrO2S and molecular weight 224.91 g/mol, is a CATO reference standard with documented purity and traceability.
(4-bromo-5-methylthiophen-2-yl)boronic acid (C5H10BBrO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine 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. 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), (4-bromo-5-methylthiophen-2-yl)boronic 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.
Physical & Chemical Properties
| Molecular Formula | C5H10BBrO2S |
| Molecular Weight | 224.91 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 0.5 |
| CAS Registry Year (est.) | 2001 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
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