3-Bromo-isoxazole-5-boronic acid pinacol ester CAS 862126-44-1
| CAS No. | 862126-44-1 |
| Molecular Formula | C9H13BBrNO3 |
| Molecular Weight | 273.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-Bromo-isoxazole-5-boronic acid pinacol ester (CAS 862126-44-1), molecular formula C9H13BBrNO3 and molecular weight 273.92 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-Bromo-isoxazole-5-boronic acid pinacol ester (C9H13BBrNO3) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
CATO manufactures 3-Bromo-isoxazole-5-boronic acid pinacol ester under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H13BBrNO3 |
| Molecular Weight | 273.92 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- 2-Chloro-6-chloro-3-methylquinoxaline (CAS 76672-20-3)
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- 3-Bromo-4-methoxy-N-(1,3,4-thiadiazol-2-yl)benzamide (CAS 1183365-88-9)
- N-(2-methoxyethyl)-1-methyl-1H-1,2,3,4-tetrazol-5-amine (CAS 1343352-34-0)
- Glipizide EP Impurity F (CAS 192118-08-4)
- tert-butyl 1-(1-hydroxy-2-propoxyethyl)-7-azabicyclo[2.2.1]heptane-7-carboxylate (CAS 2279552-36-0)
- 2,6-Dichloro-3-fluorobenzotrifluoride (CAS 1804514-55-3)
- 5-Chloro-2-(piperidin-4-ylmethoxy)pyridine (CAS 1247750-39-5)
- (1-(2-(N-Methylbenzamido)acetyl)pyrrolidin-2-yl)boronic acid (CAS 915284-99-0)
- Tirzepatide Impurity 58 (CAS CATO-C4X-324058)
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