(E)-2-(2,4-Difluorostyryl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane CAS 736987-78-3
| CAS No. | 736987-78-3 |
| Molecular Formula | C14H17BF2O2 |
| Molecular Weight | 266.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(E)-2-(2,4-Difluorostyryl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 736987-78-3) is a high-purity analytical reference standard with the molecular formula C14H17BF2O2 and a molecular weight of 266.09 g/mol.
(E)-2-(2,4-Difluorostyryl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (C14H17BF2O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C14H17BF2O2 |
| Molecular Weight | 266.09 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) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | F-containing |
Related E Standards
Recommended Standards
- (5-Bromopyridin-3-yl)(1-methyl-1H-imidazol-2-yl)methanone (CAS 889944-40-5)
- (E)-5-(4-bromophenyl)furan-2-carbaldehyde oxime (CAS 52507-68-3)
- 5-Bromo-N-phenylfuran-3-carboxamide (CAS 197846-09-6)
- 1-(2-Bromo-4-methylphenyl)-1h-pyrrole-2,5-dione (CAS 40011-62-9)
- 2-Chloro-N-(2,5-dichlorobenzyl)-N-methylacetamide (CAS 1353981-74-4)
- 3-Benzyloxolane-2,5-dione (CAS 19544-43-5)
- 2,6-Bis(1-methyl-1H-benzo[d]imidazol-2-yl)pyridin-4(1H)-one (CAS 533928-74-4)
- Butanedioic acid, 1-[2-[(1-oxo-2-propen-1-yl)oxy]ethyl] ester, polymer with butyl 2-propenoate, ethenylbenzene and methyl 2-methyl-2-propenoate (CAS 103885-38-7)
- 1-(1-Ethyl-3-methyl-1H-pyrazol-4-yl methyl)-piperazine (CAS 957428-72-7)
- 5-(4-Methoxyphenyl)-3-methyl-1-phenyl-1H-pyrazole (CAS 90276-22-5)
- 1-(9H-fluoren-9-yl)-2,2,2-trifluoroethan-1-one (CAS 386-83-4)
- 4-(Aminomethyl)-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-sulfonyl chloride (CAS 1805297-67-9)
- (S)-3-amino-2-(4-hydroxybenzyl)propanoic acid (CAS 1190597-08-0)
- Custom peptides (CAS CATO-CPTD788509)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com