4,4,5,5-Tetramethyl-2-(1,2,3,6-tetrahydro-[1,1'-biphenyl]-4-yl)-1,3,2-dioxaborolane CAS 287944-05-2
| CAS No. | 287944-05-2 |
| Molecular Formula | C18H25BO2 |
| Molecular Weight | 284.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,4,5,5-Tetramethyl-2-(1,2,3,6-tetrahydro-[1,1'-biphenyl]-4-yl)-1,3,2-dioxaborolane (CAS 287944-05-2) is a high-purity analytical reference standard with the molecular formula C18H25BO2 and a molecular weight of 284.20 g/mol.
4,4,5,5-Tetramethyl-2-(1,2,3,6-tetrahydro-[1,1'-biphenyl]-4-yl)-1,3,2-dioxaborolane (C18H25BO2) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4,4,5,5-Tetramethyl-2-(1,2,3,6-tetrahydro-[1,1'-biphenyl]-4-yl)-1,3,2-dioxaborolane meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H25BO2 |
| Molecular Weight | 284.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Tetramethyl Standards
- 4,4,5,5-Tetramethyl-2-(2-methyl-3-phenylbicyclo[1.1.1]pentan-1-yl)-1,3,2-dioxaborolane (CAS 2609866-52-4)
- 4,4,5,5-Tetramethyl-2-(2-phenyl-1-cyclohexen-1-yl)-1,3,2-dioxaborolane (CAS 462636-88-0)
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- 4-Methyl-5-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1H-pyrazole (CAS 1251931-39-1)
- 1-Methyl-3-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1H-pyrazole (CAS 1311285-11-6)
- 1-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)-1H-pyrazole (CAS 1315281-50-5)
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- 1-Benzyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 1447764-19-3)
Recommended Standards
- 4-((3,4-Dichlorobenzyl)thio)aniline (CAS 712309-51-8)
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- 2-[2-(methoxymethoxy)-4-methylphenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 517864-11-8)
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