(1E)-N-(2-Chloro-4-fluorophenyl)-1-{4-[(2,4-dichlorophenyl)methoxy]phenyl}methanimine CAS 297149-78-1
| CAS No. | 297149-78-1 |
| Molecular Formula | C20H13Cl3FNO |
| Molecular Weight | 408.68 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.
(1E)-N-(2-Chloro-4-fluorophenyl)-1-{4-[(2,4-dichlorophenyl)methoxy]phenyl}methanimine (CAS 297149-78-1) is a high-purity analytical reference standard with the molecular formula C20H13Cl3FNO and a molecular weight of 408.68 g/mol.
Based on its molecular formula C20H13Cl3FNO, (1E)-N-(2-Chloro-4-fluorophenyl)-1-{4-[(2,4-dichlorophenyl)methoxy]phenyl}methanimine contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 408.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C20H13Cl3FNO |
| Molecular Weight | 408.68 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
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- Semaglutide impurity 40 (CAS CATO-C4X-222640)
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