2-Chloro-4-fluoro-5-methoxyphenylboronic Acid CAS 1256355-46-0
| CAS No. | 1256355-46-0 |
| Molecular Formula | C7H7BClFO3 |
| Molecular Weight | 204.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-Chloro-4-fluoro-5-methoxyphenylboronic Acid (CAS 1256355-46-0), molecular formula C7H7BClFO3 and molecular weight 204.39 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H7BClFO3, 2-Chloro-4-fluoro-5-methoxyphenylboronic Acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 204.39 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H7BClFO3 |
| Molecular Weight | 204.39 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, 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.) | 1990 |
| Halogen Content | F/Cl-containing |
Related Chloro Standards
- (2-Chloro-6-fluoro-3-methoxyphenyl)boronic acid (CAS 1072945-77-7)
- (5-Chloro-2-fluoro-4-methoxyphenyl)boronic acid (CAS 1072952-18-1)
- 3-Chloro-4-fluoro-5-methoxyphenylboronic acid (CAS 1379466-82-6)
- (4-Chloro-5-fluoro-2-methoxyphenyl)boronic acid (CAS 1443379-11-0)
- (3-Chloro-5-fluoro-4-methoxyphenyl)boronic acid (CAS 1451392-04-3)
- 4-Chloro-2-fluoro-3-hydroxymethylphenylboronic acid (CAS 1451393-58-0)
- (4-Chloro-2-fluoro-5-methoxyphenyl)boronic acid (CAS 153122-60-2)
- (4-Chloro-2-fluoro-6-methoxyphenyl)boronic acid (CAS 1628684-10-5)
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