(4-bromo-2-methylphenyl)boronic acid CAS 221006-71-9
| CAS No. | 221006-71-9 |
| Molecular Formula | C7H14BBrO2 |
| Molecular Weight | 220.90 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(4-bromo-2-methylphenyl)boronic acid (CAS 221006-71-9), molecular formula C7H14BBrO2 and molecular weight 220.90 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H14BBrO2, (4-bromo-2-methylphenyl)boronic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 220.90 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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-2-methylphenyl)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 | C7H14BBrO2 |
| Molecular Weight | 220.90 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.) | 2020 |
| Halogen Content | Br-containing |
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Recommended Standards
- (Bromomethyl)boronic Acid Pinacol Ester (CAS 166330-03-6)
- 3- (Bromomethyl) phenyl boronic acid 3-(bromomethyl)phenylboronic acid 51323-43-4 A22560 (CAS 51323-43-4)
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- 2-Bromomethylphenylboronic acid 2-(Bromomethyl)phenylboronic acid a-Bromo-o-tolueneboronic acid o-Boronobenzyl bromide 91983-14-1 (CAS 91983-14-1)
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- 1-(4-(Aminomethyl)benzyl)-3-methylimidazolidin-2-one (CAS 1248805-08-4)
- 2-Amino-6-(4-chlorophenyl)-4-(4-methoxyphenyl)-5-methylpyridine-3-carbonitrile (CAS 338794-64-2)
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- 3-Bromo-1-(3,4-dimethoxybenzyl)-1H-pyrrole-2,5-dione (CAS 909397-79-1)
- 5-Chloro-4-nitro-1-propyl-1H-pyrazole (CAS 1429309-41-0)
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- 3-(1-Ethyl-1h-1,2,4-triazol-5-yl)propanoic acid (CAS 1250803-63-4)
- Semaglutide impurity 76 (CAS CATO-C4X-222676)
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