4,4,5,5-Tetramethyl-2-(3-phenoxyphenyl)-1,3,2-dioxaborolane CAS 864772-18-9
| CAS No. | 864772-18-9 |
| Molecular Formula | C18H21BO3 |
| Molecular Weight | 296.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4,4,5,5-Tetramethyl-2-(3-phenoxyphenyl)-1,3,2-dioxaborolane (CAS 864772-18-9) is a high-purity analytical reference standard with the molecular formula C18H21BO3 and a molecular weight of 296.17 g/mol.
Based on its molecular formula C18H21BO3, 4,4,5,5-Tetramethyl-2-(3-phenoxyphenyl)-1,3,2-dioxaborolane contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 296.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C18H21BO3 |
| Molecular Weight | 296.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 8.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
Related Tetramethyl Standards
- 4'-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,1'-biphenyl]-2-ol (CAS 1219741-54-4)
- 1-(6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-2-yl)ethanone (CAS 1614255-25-2)
- 3-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)pentanedinitrile (CAS 2304635-62-7)
- 4'-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,1'-biphenyl]-4-ol (CAS 760989-91-1)
- 4,4,5,5-Tetramethyl-2-(2-methyl-4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane (CAS 1011459-26-9)
- 4,4,5,5-Tetramethyl-2-(4-((methylsulfonyl)methyl)phenyl)-1,3,2-dioxaborolane (CAS 1383968-45-3)
- 4-(5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-yl)morpholine (CAS 1402172-49-9)
- 4,4,5,5-Tetramethyl-2-(3-methyl-4-(methylsulfonyl)phenyl)-1,3,2-dioxaborolane (CAS 1421340-99-9)
Recommended Standards
- 4-Phenoxyphenylboronic Acid Pinacol Ester (CAS 269410-26-6)
- 4-(2,4-Dichlorophenylsulfonyl)morpholine (CAS 74832-72-7)
- 5-(Trifluoromethyl)-2-(3-(trifluoromethyl)phenyl)-1,2-dihydro-3H-pyrazol-3-one (CAS 74268-01-2)
- 4-(1,3-Benzothiazol-2-yl)-2,6-dichlorophenol (CAS 637302-77-3)
- 2-Methylnaphthalene-bis(HexachlorocyclopentadienE)adduct (CAS 4605-91-8)
- 3,3-Difluoro-1-phenylpropan-1-amine (CAS 1339427-03-0)
- 2-tert-Butylamino-d9-4-chloro-6-cyclopropylamino-1,3,5-triazine (CAS 1189419-70-2)
- 3-(Furan-2-yl)-2-(4-methoxyphenyl)acrylonitrile (CAS 10280-99-6)
- 2-hydrazino-4,8-dimethylquinoline (CAS 57369-93-4)
- 6-Benzyl-5-methylpyrimidine-2,4(1H,3H)-dione (CAS 153815-98-6)
- 2,5-Dimethoxy-3,4,6-trimethylbenzaldehyde (CAS 103808-42-0)
- 8-Iodoquinoline-2-carbaldehyde (CAS 1165569-19-6)
- 5-(Difluoromethoxy)-3-iodo-1-methyl-1H-indazole (CAS 1422772-62-0)
- Semaglutide impurity 37 (CAS CATO-C4X-222637)
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