4-(Benzyloxy)-2,3-difluorophenylboronic acid pinacol ester CAS 2121515-12-4
| CAS No. | 2121515-12-4 |
| Molecular Formula | C19H21BF2O3 |
| Molecular Weight | 346.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-(Benzyloxy)-2,3-difluorophenylboronic acid pinacol ester is closely related to a steroid core, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-(Benzyloxy)-2,3-difluorophenylboronic acid pinacol ester (CAS 2121515-12-4) is a high-purity analytical reference standard with the molecular formula C19H21BF2O3 and a molecular weight of 346.18 g/mol.
Based on its molecular formula C19H21BF2O3, 4-(Benzyloxy)-2,3-difluorophenylboronic acid pinacol ester contains a steroid core, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 346.18 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-(Benzyloxy)-2,3-difluorophenylboronic acid pinacol ester 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 | C19H21BF2O3 |
| Molecular Weight | 346.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | F-containing |
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Recommended Standards
- 4-((3-Bromophenyl)amino)-7-methoxyquinazolin-6-ol (CAS 295330-61-9)
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- 2-[(5-Bromo-4-formyl-2-methoxyphenoxy)methyl]benzonitrile (CAS 443291-77-8)
- Ciprofloxacin Impurity 15 (CAS 86483-53-6)
- 1-((1R,2R)-2-Aminocyclohexyl)-3-(3,5-bis(trifluoromethyl)phenyl)urea (CAS 705928-69-4)
- 3-(4-(1h-Pyrazol-1-yl)phenyl)prop-2-en-1-ol (CAS 545420-92-6)
- (5E)-5-[(3-Phenyl-1H-pyrazol-4-yl)methylidene]-1,3-thiazolidine-2,4-dione (CAS 477710-84-2)
- 1-Methyl-3-(4-nitrophenyl)hexahydropyrimidine (CAS 821780-18-1)
- N-benzyl-3-nitro-N-(2-oxo-2-((2,4,6-trichlorophenyl)amino)ethyl)benzamide (CAS 332163-27-6)
- [2-(3,4-Dimethoxyphenyl)-ethyl]-(4-fluoro-benzyl)-amine hydrochloride (CAS 435341-91-6)
- Hoveyda-Grubbs Catalyst<SUP>®</SUP> M730 (CAS 1025728-57-7)
- Phenyl vinyl sulfide-1-<SUP>13</SUP>C (CAS 1202864-62-7)
- Diethyl 2-Ethoxymalonate (CAS 37555-99-0)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
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