5-[(1E)-{[(2,4-dichlorophenyl)methoxy]imino}methyl]-3-[(4-fluorophenyl)methyl]-4-hydroxy-1-[(4-methylphenyl)methyl]-1,2-dihydropyridin-2-one CAS 477856-08-9
| CAS No. | 477856-08-9 |
| Molecular Formula | C28H23Cl2FN2O3 |
| Molecular Weight | 525.40 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.
5-[(1E)-{[(2,4-dichlorophenyl)methoxy]imino}methyl]-3-[(4-fluorophenyl)methyl]-4-hydroxy-1-[(4-methylphenyl)methyl]-1,2-dihydropyridin-2-one (CAS 477856-08-9), molecular formula C28H23Cl2FN2O3 and molecular weight 525.40 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, 5-[(1E)-{[(2,4-dichlorophenyl)methoxy]imino}methyl]-3-[(4-fluorophenyl)methyl]-4-hydroxy-1-[(4-methylphenyl)methyl]-1,2-dihydropyridin-2-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 525.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C28H23Cl2FN2O3 |
| Molecular Weight | 525.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related E Standards
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