3,5-Difluoro-4-methoxy-2-methylphenylboronic acid CAS 2096338-65-5
| CAS No. | 2096338-65-5 |
| Molecular Formula | C8H9BF2O3 |
| Molecular Weight | 201.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3,5-Difluoro-4-methoxy-2-methylphenylboronic acid (CAS 2096338-65-5) is a high-purity analytical reference standard with the molecular formula C8H9BF2O3 and a molecular weight of 201.96 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, 3,5-Difluoro-4-methoxy-2-methylphenylboronic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 201.96 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C8H9BF2O3 |
| Molecular Weight | 201.96 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.) | 1997 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 3,4-Difluoro-5-ethoxyphenylboronic acid (CAS 1162261-96-2)
- 3,4-Difluoro-2-ethoxyphenylboronic acid (CAS 1451391-69-7)
- 2,4-Difluoro-3-methoxy-5-methylphenylboronic acid (CAS 2096331-81-4)
- 2,6-Difluoro-3-ethoxyphenylboronic acid (CAS 849062-00-6)
- 2,2-Difluoro-1,3-benzodioxole-5-boronic Acid (CAS 190903-71-0)
- 2,2-Difluoro-1,3-benzodioxole-5-carboxylic Acid (CAS 656-46-2)
- 2,4-Difluoro-5-nitrobenzamide (CAS 1097799-57-9)
- 2,6-Difluoro-3-nitrobenzamide (CAS 124169-54-6)
Recommended Standards
- 3,4-Dichloro-2,5,6-trifluoropyridine (CAS 52026-99-0)
- 3-Ethoxy-2,4-difluorophenylboronic acid (CAS 2096341-72-7)
- 3-(Difluoromethoxy)-4-methylphenylboronic acid (CAS 958451-74-6)
- 4-Ethoxy-2,3-difluorophenylboronic Acid (CAS 212386-71-5)
- 2-Formyl-4-hydroxybenzamide (CAS 1243372-83-9)
- 4-(3-Chloro-5-fluorophenyl)-3-fluorobenzoic acid (CAS 1261970-29-9)
- 1'H-spiro[cyclohexane-1,2'-quinoline] (CAS 25337-81-9)
- Deoxycholic acid Impurity 5 (CAS CATO-C4X-33595)
- {[cis-4-fluoro-1-(thiophen-2-ylmethyl)pyrrolidin-2-yl]methyl}(methyl)amine (CAS 1820576-31-5)
- 5-Cyclopropoxy-3-methyl-2-(methylthio)pyridine (CAS 1243403-63-5)
- 2-(4,5-Dimethyl-1h-imidazol-1-yl)ethan-1-amine dihydrochloride (CAS 1390654-14-4)
- 2,2-Difluoro-2-(1-methoxycyclohexyl)acetic acid (CAS 1447943-65-8)
- 3-[4-(difluoromethoxy)benzoyl]-4H,5H,6H-cyclopenta[b]thiophen-2-amine (CAS 1443980-40-2)
- Semaglutide impurity 76 (CAS CATO-C4X-222676)
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