4,5-Difluro-2-ethoxyphenylboronic acid pinacol ester CAS 2121513-79-7
| CAS No. | 2121513-79-7 |
| Molecular Formula | C14H19BF2O3 |
| Molecular Weight | 284.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4,5-Difluro-2-ethoxyphenylboronic acid pinacol ester.
4,5-Difluro-2-ethoxyphenylboronic acid pinacol ester (CAS 2121513-79-7) is a high-purity analytical reference standard with the molecular formula C14H19BF2O3 and a molecular weight of 284.11 g/mol.
The molecular framework of 4,5-Difluro-2-ethoxyphenylboronic acid pinacol ester (C14H19BF2O3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. 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. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
CATO manufactures 4,5-Difluro-2-ethoxyphenylboronic 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 | C14H19BF2O3 |
| Molecular Weight | 284.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; 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 | F-containing |
Related Difluro Standards
Recommended Standards
- 4-(2,2-Difluoroethoxy)phenylboronic Acid Pinacol Ester (CAS 864754-48-3)
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- 4-((2-Methoxyphenoxy)methyl)-2-phenyl-1,3,2-dioxaborolane (CAS 2412-75-1)
- 5-((4-Bromophenyl)amino)dihydropyrimidine-2,4(1H,3H)-dione (CAS 6635-63-8)
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- 1-(4-Fluorophenyl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid (CAS 868171-67-9)
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- tert-Butyl 7-bromo-2,3-dihydropyrido[3,2-f][1,4]oxazepine-4(5H)-carboxylate (CAS 1402233-05-9)
- 5-(3,4-Dihydro-2H-pyrrol-5-yl)-6-methylpyridin-2-amine (CAS 1352486-55-5)
- tert-Butyl (trans-4-phenylcyclohexyl)carbamate (CAS 1190890-51-7)
- Semaglutide Impurity 165 (CAS CATO-C4X-2226165)
Why CATO?
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