(3-Ethoxy-5-(trifluoromethoxy)phenyl)boronic acid CAS 1256345-87-5
| CAS No. | 1256345-87-5 |
| Molecular Formula | C9H10BF3O4 |
| Molecular Weight | 249.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, (3-Ethoxy-5-(trifluoromethoxy)phenyl)boronic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 249.98 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies (3-Ethoxy-5-(trifluoromethoxy)phenyl)boronic acid (CAS 1256345-87-5), a certified reference material (molecular formula C9H10BF3O4, MW 249.98 g/mol) for analytical method development and quality control.
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.) | 1990 |
| Halogen Content | F-containing |
Related Ethoxy Standards
- (5-Ethoxy-2-(trifluoromethoxy)phenyl)boronic acid (CAS 1076245-99-2)
- 2-Ethoxy-5-(trifluoromethoxy)phenylboronic acid (CAS 1310405-00-5)
- 3-Ethoxy-4-(trifluoromethoxy)phenylboronic acid (CAS 1701449-06-0)
- 2-Ethoxy-4-(trifluoromethoxy)phenylboronic acid (CAS 1704064-18-5)
- 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-(Methoxymethoxy)-5-(trifluoromethyl)phenyl)boronic acid (CAS 1256355-54-0)
- 3-Carboxy-4-(trifluoromethoxy)phenylboronic acid (CAS 2096329-67-6)
- 2-Bromobenzyl Bromide (CAS 3433-80-5)
- 2,5-Dibromotoluene (CAS 615-59-8)
- Methyl 2-((R)-morpholin-2-yl)acetate (CAS 1352709-52-4)
- 4-Hydroxybicyclo[4.2.0]octa-1,3,5-triene-7-carbonitrile (CAS 242473-47-8)
- (S)-Ethyl 3-(3-bromophenyl)-2-((tert-butoxycarbonyl)amino)propanoate (CAS 1159502-91-6)
- 7-(4-Ethylphenyl)-2-methylthiazolo[4,5-d]pyridazin-4-ol (CAS 1105192-17-3)
- Boc-D-alanine Hydrate (CAS 75638-15-2)
- 4-Ethyl-5-methyl-4H-1,2,4-triazol-3-amine (CAS 254908-77-5)
- 5-(2,4-Dimethylphenyl)-5-oxopentanoic acid (CAS 420119-85-3)
- (4-Bromo-1h-pyrrol-2-yl)(morpholino)methanone (CAS 900019-58-1)
- 2-(4-(tert-Butyl)phenyl)-4-methyl-1H-pyrrole (CAS 795274-75-8)
- Semaglutide impurity 109 (CAS CATO-C4X-2226109)
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