(2-Ethyl-5-fluoro-4-((2-(trimethylsilyl)ethoxy)methoxy)benzene)boronic acid pinacol ester, 97% CAS 1421503-40-3
| CAS No. | 1421503-40-3 |
| Molecular Formula | C20H34BFO4Si |
| Molecular Weight | 396.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(2-Ethyl-5-fluoro-4-((2-(trimethylsilyl)ethoxy)methoxy)benzene)boronic acid pinacol ester, 97% (CAS 1421503-40-3) is a high-purity analytical reference standard with the molecular formula C20H34BFO4Si and a molecular weight of 396.38 g/mol.
The molecular framework of (2-Ethyl-5-fluoro-4-((2-(trimethylsilyl)ethoxy)methoxy)benzene)boronic acid pinacol ester, 97% (C20H34BFO4Si) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C20H34BFO4Si |
| Molecular Weight | 396.38 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | F-containing |
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