2,2'-(2,3-Difluoro-5-methoxy-1,4-phenylene)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) CAS 2377608-79-0
| CAS No. | 2377608-79-0 |
| Molecular Formula | C19H28B2F2O5 |
| Molecular Weight | 396.04 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.
CATO supplies 2,2'-(2,3-Difluoro-5-methoxy-1,4-phenylene)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) (CAS 2377608-79-0), a certified reference material (molecular formula C19H28B2F2O5, MW 396.04 g/mol) for analytical method development and quality control.
Owing to a steroid core, a hydroxyl group, an ether linkage, fluorine substitution, 2,2'-(2,3-Difluoro-5-methoxy-1,4-phenylene)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 396.04 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C19H28B2F2O5 |
| Molecular Weight | 396.04 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 2,2'-(2,4-Difluoro-5-methoxy-1,3-phenylene)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) (CAS 2096332-73-7)
- 1,2-Difluoro-3,5-diiodo-4-methoxybenzene (CAS 1228093-55-7)
- 2,4-Difluoro-N-[5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3-pyridinyl]benzenesulfonamide (CAS 1092565-35-9)
- Methyl 4-(2,7-difluoro-6-hydroxy-3-oxo-3H-xanthen-9-yl)-3-methylbenzoate (CAS 879288-18-3)
- 4-[Difluoro({[3-(trifluoromethyl)phenyl]sulfanyl})methyl]-6-methyl-2-phenylpyrimidine (CAS 306979-34-0)
- (R)-3,5-Difluoro-N-(4-(1-(1-methylethylsulfonamido)propan-2-yl)phenyl)benzamide 2924AH 376594-67-1 C19H22F2N2O3S (CAS 376594-67-1)
- 1,4-Difluoro-9H-fluoren-9-one (CAS 17532-94-4)
- 3,4-Difluoro-4'-(4'-propyl-[1,1'-bi(cyclohexan)]-4-yl)-1,1'-biphenyl (CAS 119990-81-7)
Recommended Standards
- Methyl 2-(2,3-dibromo-6-ethoxy-4-formylphenoxy)acetate (CAS 827592-88-1)
- Bis(mercaptobenzthiazolato)copper (CAS 52139-06-7)
- Agaricic ester (CAS 887375-75-9)
- 1,8-Diamino-4,5-dibromoanthracene-9,10-dione (CAS 62078-39-1)
- 1-Methoxy-N-methylisoquinolin-7-amine (CAS 1368066-07-2)
- 3-Iodo-1H-pyrrolo[2,3-b]pyridine-6-carbonitrile (CAS 1190318-91-2)
- H-D-Lys(Ac)-OH (CAS 51621-57-9)
- (3-Fluorophenyl)(m-tolyl)methanol (CAS 844683-31-4)
- 4-Phenylsulfanylbutyroyl chloride (CAS 138738-23-5)
- (Tetrahydro-2H-pyran-4-yl)methyl 4-methylbenzenesulfonate (CAS 101691-65-0)
- 2-Methoxyethyl 7-(3-hydroxyphenyl)-5-methyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate (CAS 879935-95-2)
- N'-(9-((2R,4S,5R)-5-(Aminomethyl)-4-hydroxytetrahydrofuran-2-yl)-6-oxo-6,9-dihydro-1H-purin-2-yl)-N,N-dibutylformimidamide (CAS 669083-49-2)
- 5-Chloro-2-phenyl-2H-pyrazole-3-carboxylic acid (CAS 1216909-62-4)
- Semaglutide Impurity 186 (CAS CATO-C4X-2226186)
Why CATO?
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