3-Chloro-6-fluoro-2-methoxyphenylboronic acid pinacol ester CAS 2121513-63-9
| CAS No. | 2121513-63-9 |
| Molecular Formula | C13H17BClFO3 |
| Molecular Weight | 286.53 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-Chloro-6-fluoro-2-methoxyphenylboronic acid pinacol ester (CAS 2121513-63-9), molecular formula C13H17BClFO3 and molecular weight 286.53 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system, 3-Chloro-6-fluoro-2-methoxyphenylboronic acid pinacol ester is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 286.53 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H17BClFO3 |
| Molecular Weight | 286.53 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, 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) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | F/Cl-containing |
Related Chloro Standards
- 2-(4-Chloro-5-fluoro-2-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1092581-00-4)
- 2-(4-Chloro-2-fluoro-3-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1126321-06-9)
- 2-(3-Chloro-5-fluoro-4-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1422022-15-8)
- 4-Chloro-3-fluoro-2-methoxyphenylboronic acid pinacol ester (CAS 1628524-83-3)
- 2-(6-Chloro-2-fluoro-3-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1628684-12-7)
- (2-Chloro-4-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methanol (CAS 2068789-77-3)
- 2-(2-Chloro-5-fluoro-4-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2445647-03-8)
- 2-(3-Chloro-2-fluoro-4-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2121512-36-3)
Recommended Standards
- 2-Fluoro-4-methoxybenzeneboronic acid pinacol ester, 97% (CAS 628692-21-7)
- 5-Chloro-2-fluoro-4-methoxyphenylboronic acid pinacol ester (CAS 2121513-64-0)
- 2-Chloro-6-fluoro-3-methoxyphenylboronic acid pinacol ester (CAS 2121512-16-9)
- 6-chloro-3-iodo-1H-pyrrolo[3,2-c]pyridine (CAS 1000341-55-8)
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