3-Chloro-5-fluorobenzeneboronic acid pinacol ester, 97% CAS 1245524-02-0
| CAS No. | 1245524-02-0 |
| Molecular Formula | C12H15BClFO2 |
| Molecular Weight | 256.51 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.
3-Chloro-5-fluorobenzeneboronic acid pinacol ester, 97% (CAS 1245524-02-0), molecular formula C12H15BClFO2 and molecular weight 256.51 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H15BClFO2, 3-Chloro-5-fluorobenzeneboronic acid pinacol ester, 97% contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 256.51 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 | C12H15BClFO2 |
| Molecular Weight | 256.51 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1990 |
| Halogen Content | F/Cl-containing |
Related Chloro Standards
- 5-Chloro-2-fluorophenylboronic Acid Pinacol Ester (CAS 1190129-77-1)
- 3-Chloro-2-fluorobenzeneboronic acid pinacol ester, 97% (CAS 1192025-01-6)
- 2-(2-Chloro-6-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1599432-38-8)
- 2-Chloro-3-fluorobenzeneboronic acid pinacol ester, 97% (CAS 1688698-58-9)
- 2-(2-Chloro-4-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 892845-64-6)
- 2-Chloro-5-fluorobenzeneboronic acid pinacol ester, 97% (CAS 870486-41-2)
- 3-Chloro-4-fluorobenzeneboronic acid pinacol ester, 97% (CAS 635305-46-3)
- 4-Chloro-2-fluorobenzeneboronic acid pinacol ester, 97% (CAS 765917-27-9)
Recommended Standards
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- 5-Bromopyridine-2-sulfonyl chloride (CAS 874959-68-9)
- Methyl 5-bromo-2-chlorothiazole-4-carboxylate (CAS 1784255-01-1)
- tert-Butyl 4-(5-(amino(phenyl)methyl)-3-methylpyridin-2-yl)piperazine-1-carboxylate (CAS 1355219-24-7)
- (3-Aminobenzofuran-2-yl)(3-methoxyphenyl)methanone (CAS 889997-07-3)
- 3-(3-Bromophenyl)-5-chloro-1,2,4-thiadiazole (CAS 1053659-07-6)
- N-(3-methoxybenzyl)acetamide (CAS 174688-81-4)
- 2-(Aminomethyl)phenol acetate (CAS 1206675-01-5)
- 2,5,7-Trichloro-9H-fluoren-4-amine (CAS 97028-39-2)
- Butyldimethyl(pentyl)silane (CAS 71864-45-4)
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- Methyl 4-((2-hydroxyethyl)(methyl)amino)-3-iodobenzoate (CAS 1131614-50-0)
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