2,5-Dimethyl-4-hydroxymethylphenylboronic acid pinacol ester CAS 2121514-86-9
| CAS No. | 2121514-86-9 |
| Molecular Formula | C15H23BO3 |
| Molecular Weight | 262.15 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.
2,5-Dimethyl-4-hydroxymethylphenylboronic acid pinacol ester (CAS 2121514-86-9), molecular formula C15H23BO3 and molecular weight 262.15 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H23BO3, 2,5-Dimethyl-4-hydroxymethylphenylboronic acid pinacol ester contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 262.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C15H23BO3 |
| Molecular Weight | 262.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
Related Dimethyl Standards
- 2-(4-(5,5-Dimethyl-1,3,2-dioxaborinan-2-yl)phenyl)-2-methylpropan-1-ol (CAS 1467060-49-6)
- 3,5-Dimethyl-2-methoxyphenylboronic acid pinacol ester (CAS 2121512-20-5)
- 3,5-Dimethyl-4-hydroxymethylphenylboronic acid pinacol ester (CAS 2121514-08-5)
- Dimethyl 2-(trifluoromethyl)terephthalate (CAS 102867-06-1)
- Dimethyl 4-(trifluoromethyl)phthalate (CAS 728-47-2)
- Dimethyl 5-(trifluoromethyl)benzene-1,3-dicarboxylate (CAS 868286-79-7)
- Methyl 3-(5,5-dimethyl-1,3,2-dioxaborinan-2-yl)-4-methylbenzoate (CAS 1221343-13-0)
- 5,5-Dimethyl-2-(4-(oxetan-3-yloxy)phenyl)-1,3,2-dioxaborinane (CAS 1467060-32-7)
Recommended Standards
- 2,5-Difluorophenyl trifluoromethanesulphonate (CAS 211512-93-5)
- 2-Benzyl-4-bromoaniline (CAS 86233-09-2)
- 2,4-Difluorophenyl trifluoromethanesulfonate (CAS 264135-49-1)
- 2-Isopropyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol (CAS 2055482-34-1)
- 2-Methyl-3-nitrophenyl trifluoromethanesulfonate (CAS 1446016-49-4)
- n-Methyl-9h-fluoren-9-amine (CAS 38359-28-3)
- 1-[(2-Bromo-6-fluorophenyl)methyl]piperidine (CAS 1355247-68-5)
- 6-Ethyl-2h-1,2,4-triazin-5-one (CAS 16120-04-0)
- 2,2-Difluoro-4-methylbenzo[d][1,3]dioxole-5-carboxylic acid (CAS 162506-80-1)
- 2-(5-Methyl-2-thienyl)ethanamine Hydrochloride (CAS 1215839-34-1)
- 2,4,5,6-Tetrahydrocyclopenta[c]pyrrol-4-amine (CAS 1544892-88-7)
- Trifluoro-methanesulfonic acid dimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silyl ester (CAS 1613709-30-0)
- (S)-1-(3-Bromophenyl)ethanol (CAS 134615-22-8)
- Semaglutide impurity 250 (CAS CATO-C4X-2226250)
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