3,5-Difluoro-4-methoxyphenylboronic Acid CAS 208641-98-9
| CAS No. | 208641-98-9 |
| Molecular Formula | C7H7BF2O3 |
| Molecular Weight | 187.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 187.94 g/mol gives 3,5-Difluoro-4-methoxyphenylboronic Acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3,5-Difluoro-4-methoxyphenylboronic Acid (CAS 208641-98-9), a certified reference material (molecular formula C7H7BF2O3, MW 187.94 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, 3,5-Difluoro-4-methoxyphenylboronic Acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 187.94 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.
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 | C7H7BF2O3 |
| Molecular Weight | 187.94 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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.) | 2016 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 2,3-Difluoro-4-(hydroxymethyl)phenylboronic acid (CAS 1315281-32-3)
- 2,4-Difluoro-3-(hydroxymethyl)phenylboronic acid (CAS 1352813-46-7)
- (2,4-Difluoro-5-methoxyphenyl)boronic acid (CAS 1395417-65-8)
- (2,3-Difluoro-4-methoxyphenyl)boronic acid (CAS 170981-41-6)
- 2,4-Difluoro-6-methoxyphenylboronic Acid (CAS 1808997-86-5)
- (2,4-Difluoro-3-methoxyphenyl)boronic acid (CAS 406482-18-6)
- (3,4-Difluoro-2-methoxyphenyl)boronic acid (CAS 905583-06-4)
- (3,4-Difluoro-5-methoxyphenyl)boronic acid (CAS 925910-42-5)
Recommended Standards
- 3,5-Difluoro-2-methoxybenzeneboronic acid (CAS 737000-76-9)
- 4-(Difluoromethoxy)phenylboronic Acid (CAS 688810-12-0)
- 2,6-Difluoro-4-methoxyphenylboronic acid (CAS 406482-20-0)
- 4,5-Difluoro-2-methoxyphenylboronic Acid (CAS 870777-32-5)
- 2-Chloro-4-hydroxyphenylboronic acid (CAS 766549-26-2)
- Cyclohex-3-en-1-ol (CAS 822-66-2)
- 4-Methyl-N-propionyloxazole-5-carboxamide (CAS 62539-94-0)
- 2-(5-Bromothiophene-2-carbonyl)benzoic acid (CAS 205644-06-0)
- 4,4'-Bis((2-methyl-1H-imidazol-1-yl)methyl)-1,1'-biphenyl (CAS 1283072-03-6)
- tert-Butyl (3,3-difluoropropyl)carbamate (CAS 1862650-06-3)
- Oroxylin A-7-O-glucuronide (CAS 36948-76-2)
- cis-N-(2-Aminocyclohexyl)-4-fluorobenzamide (CAS 1607450-11-2)
- 3-Amino-2-thiophenecarboxylic Acid (CAS 55341-87-2)
- Semaglutide impurity 215 (CAS CATO-C4X-2226215)
Why CATO?
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