2-Bromo-5-iodophenylboronic acid pinacol ester CAS 2121512-32-9
| CAS No. | 2121512-32-9 |
| Molecular Formula | C12H15BBrIO2 |
| Molecular Weight | 408.87 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Bromo-5-iodophenylboronic acid pinacol ester (CAS 2121512-32-9), molecular formula C12H15BBrIO2 and molecular weight 408.87 g/mol, is a CATO reference standard with documented purity and traceability.
2-Bromo-5-iodophenylboronic acid pinacol ester (C12H15BBrIO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine/iodine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C12H15BBrIO2 |
| Molecular Weight | 408.87 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Br/I-containing |
Related Bromo Standards
- 2-(3-Bromo-5-iodophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 942069-57-0)
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- 1-Bromo-2,4-diiodobenzene (CAS 126063-04-5)
- 2-Bromo-1,3-diiodobenzene (CAS 1369779-06-5)
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Recommended Standards
- Dapagliflozin Impurity N9 (CAS 2452300-81-9)
- 1,1,1,9,9,9-Hexamethyl-3,5,7-trioctyl-3,5,7-tris((trimethylsilyl)oxy)pentasiloxane (CAS 187593-69-7)
- Dapagliflozin (CAS 461432-26-8)
- 1,1,1,5,5,5-Hexamethyl-3-octyl-3-((trimethylsilyl)oxy)trisiloxane (CAS 187592-85-4)
- 3-Iodobenzylzinc bromide (CAS 352530-31-5)
- 1,4-Dichlorobenzene (CAS 106-46-7)
- N-((3,4-Dimethylbenzoyl)oxy)-2-(quinolin-8-yloxy)acetimidamide (CAS 88758-72-9)
- 1-(5-Chloro-2-hydroxyphenyl)butan-1-one (CAS 51978-33-7)
- Tazobactam Impurity 34 (CAS CATO-C4X-120534)
- 4-Amino-6-(4-chlorophenyl)-1,6-dihydro-1,3,5-triazine-2-thiol (CAS 1142207-42-8)
- 3-Methylsalicylic acid (CAS 83-40-9)
- Doxycycline Impurity 22 (CAS CATO-C4X-193122)
- Rhodium, (acetato-κO)bis(1,3-diphenyl-1,3-propanedionato-κO1,κO3)- (CAS 68413-70-7)
- Semaglutide impurity 86 (CAS CATO-C4X-222686)
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