2-Ethoxy-4-(trifluoromethoxy)phenylboronic acid CAS 1704064-18-5
| CAS No. | 1704064-18-5 |
| Molecular Formula | C9H10BF3O4 |
| Molecular Weight | 249.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Ethoxy-4-(trifluoromethoxy)phenylboronic acid (C9H10BF3O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
2-Ethoxy-4-(trifluoromethoxy)phenylboronic acid (CAS 1704064-18-5) is a high-purity analytical reference standard with the molecular formula C9H10BF3O4 and a molecular weight of 249.98 g/mol.
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.
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 | C9H10BF3O4 |
| Molecular Weight | 249.98 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), 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; 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.) | 1994 |
| Halogen Content | F-containing |
Related Ethoxy Standards
- (5-Ethoxy-2-(trifluoromethoxy)phenyl)boronic acid (CAS 1076245-99-2)
- (3-Ethoxy-5-(trifluoromethoxy)phenyl)boronic acid (CAS 1256345-87-5)
- 2-Ethoxy-5-(trifluoromethoxy)phenylboronic acid (CAS 1310405-00-5)
- 3-Ethoxy-4-(trifluoromethoxy)phenylboronic acid (CAS 1701449-06-0)
- 2-Ethoxy-5-iodopyrimidine (CAS 1083329-43-4)
- 2-Ethoxy-6-iodopyrazine (CAS 125060-68-6)
- 3-Ethoxy-6-iodopyridazine (CAS 17321-36-7)
- (3-(5-Ethoxy-5-oxopentyl)phenyl)boronic acid (CAS 1072946-57-6)
Recommended Standards
- 2-(2,4-Difluorophenyl)-4-fluorobenzo[d][1,3,2]dioxaborole (CAS 365458-32-8)
- 2-Methoxymethoxy-4-(trifluoromethyl)phenylboronic acid (CAS 659731-33-6)
- (2-(Methoxymethoxy)-5-(trifluoromethyl)phenyl)boronic acid (CAS 1256355-54-0)
- Ethyl 2,2-Difluoro-2-iodoacetate (CAS 7648-30-8)
- 2-Allyl-1,3-dimethylbenzene (CAS 1587-05-9)
- 1-Methyl-3-(3-nitrophenyl)imidazolidin-2-one (CAS 1522718-34-8)
- 134044-63-6 C9H8BrN3O2 Ethyl 3-bromoimidazo[1,2-a]pyrimidine-2-carboxylate Z4101 (CAS 134044-63-6)
- N,N'-Bis(2-ethylhexyl)-6,6'-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoindigo (CAS 1821433-54-8)
- (1-methylazepan-3-yl)methanamine (CAS 1556312-31-2)
- 1-(4-Chlorophenyl)-2-((4-methyl-5-(1-methyl-3-phenyl-1H-thieno[2,3-c]pyrazol-5-yl)-4H-1,2,4-triazol-3-yl)thio)ethan-1-one (CAS 478067-21-9)
- 2-({2-[(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)methyl]phenyl}methyl)-2,3-dihydro-1H-isoindole-1,3-dione (CAS 52401-96-4)
- Methyl 4-[(1E)-2-cyano-2-(2,2-dimethylpropanoyl)eth-1-en-1-yl]benzoate (CAS 329780-76-9)
- (S)-methyl 2-(2-hydroxy-1-pivalamidoethyl)oxazole-4-carboxylate (CAS 1421051-53-7)
- Peptide Impurity 41 (CAS CATO-CPTD788841)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com