| CAS No. | 478066-05-6 |
| Molecular Formula | C20H11BrF2N2O |
| Molecular Weight | 413.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 413.21 g/mol gives 2-(4-Bromophenyl)-7-fluoro-4-(4-fluorophenyl)phthalazin-1(2H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-(4-Bromophenyl)-7-fluoro-4-(4-fluorophenyl)phthalazin-1(2H)-one (CAS 478066-05-6), molecular formula C20H11BrF2N2O and molecular weight 413.21 g/mol, is a CATO reference standard with documented purity and traceability.
2-(4-Bromophenyl)-7-fluoro-4-(4-fluorophenyl)phthalazin-1(2H)-one (C20H11BrF2N2O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/bromine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
As a certified reference material (CRM), 2-(4-Bromophenyl)-7-fluoro-4-(4-fluorophenyl)phthalazin-1(2H)-one 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.
| Molecular Formula | C20H11BrF2N2O |
| Molecular Weight | 413.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 2 |