1,3,2-Dioxaborolane, 2-[2-[(4-methoxyphenyl)methoxy]-5-methylphenyl]-4,4,5,5-tetramethyl- CAS 2890194-40-6
| CAS No. | 2890194-40-6 |
| Molecular Formula | C21H27BO4 |
| Molecular Weight | 354.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,3,2-Dioxaborolane, 2-[2-[(4-methoxyphenyl)methoxy]-5-methylphenyl]-4,4,5,5-tetramethyl- (CAS 2890194-40-6) is a high-purity analytical reference standard with the molecular formula C21H27BO4 and a molecular weight of 354.25 g/mol.
Structurally, 1,3,2-Dioxaborolane, 2-[2-[(4-methoxyphenyl)methoxy]-5-methylphenyl]-4,4,5,5-tetramethyl- (C21H27BO4) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.5, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 354.25 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
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 | C21H27BO4 |
| Molecular Weight | 354.25 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.) | 2004 |
Related Dioxaborolane Standards
- 1,3,2-Dioxaborolane, 2-[2,3-dihydro-7-(methoxymethoxy)-1-methyl-1H-benz[e]inden-9-yl]-4,4,5,5-tetramethyl- (CAS 2918266-83-6)
- 1,3,2-DIOXABOROLANE, 2-(4-IODOPHENYL)-4,4,5,5-TETRAMETHYL- 2-(4-IODOPHENYL)-4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLANE 4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)IODOBENZENE 4-IODOBENZENEBORONIC ACID PINACOL ESTER 4-IODOPHENYLBORONIC ACID PINACOL ESTER 73852-88-7 BC001208 (CAS 73852-88-7)
- 1,3,2-Dioxaborolane, 2,2′-(2,5-selenophenediyl)bis[4,4,5,5-tetramethyl- (CAS 1611991-43-5)
- 1,3,2-Dioxaborolane, 2-(9,9-dimethyl-9H-fluoren-4-yl)-4,4,5,5-tetramethyl- (CAS 1365692-79-0)
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- 1,3,2-DIoxaborolane, D-mannitol deriv. (CAS 59184-36-0)
- 1,3,2-DIoxaborolane,?D-glucitol deriv. (CAS 74779-72-9)
Recommended Standards
- 1-(Tetrahydro-2H-pyran-2-yl)-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1H-pyrazole (CAS 2170563-95-6)
- 3-((2,4-Dichlorobenzyl)thio)-4-ethyl-5-(furan-2-yl)-4H-1,2,4-triazole (CAS 585554-06-9)
- (R)-N-((R)-1-(2-Bromo-3-(difluoromethyl)phenyl)ethyl)-2-methylpropane-2-sulfinamide (CAS 2488795-39-5)
- 3-((2,4-Dichlorobenzyl)thio)-4-methyl-5-(2-methylfuran-3-yl)-4H-1,2,4-triazole (CAS 849125-00-4)
- N-(4-Chlorophenyl)-2-(2-methoxyphenyl)-5-methylpyrazolo[1,5-a]pyrimidin-7-amine (CAS 950415-08-4)
- (R)-3,3'-Di-9-phenanthrenyl-[1,1'-binaphthalene]-2,2'-diol (CAS 1058734-56-7)
- 18319-88-5 InChI=1/C4H9NO2/c1-5(2)3-4(6)7/h3H2,1-2H3,(H,6,7 N,N-dimethylglycine glycine, N,N-dimethyl- (CAS 18319-88-5)
- Domperidone Impurity 38 (CAS CATO-C4X-142038)
- (s)-2-Amino-2-(3-(difluoromethoxy)phenyl)ethan-1-ol (CAS 1213434-05-9)
- 4-Phenoxypyrrolidin-3-ol (CAS 1343376-09-9)
- 6-Hydroxy-5-methyl-2-(2-(methylamino)ethyl)pyrimidin-4(3h)-one (CAS 1339379-07-5)
- Ibuprofen Impurity 113 (CAS CATO-C4X-1082113)
- 6-Methoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-7-ol (CAS 450-14-6)
- Semaglutide impurity 258 (CAS CATO-C4X-2226258)
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