4-(2-Chlorobenzylidene)-1-((4-nitrobenzylidene)amino)-2-phenyl-1H-imidazol-5(4H)-one CAS 126293-35-4
| CAS No. | 126293-35-4 |
| Molecular Formula | C23H15ClN4O3 |
| Molecular Weight | 430.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4-(2-Chlorobenzylidene)-1-((4-nitrobenzylidene)amino)-2-phenyl-1H-imidazol-5(4H)-one (C23H15ClN4O3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
4-(2-Chlorobenzylidene)-1-((4-nitrobenzylidene)amino)-2-phenyl-1H-imidazol-5(4H)-one (CAS 126293-35-4), molecular formula C23H15ClN4O3 and molecular weight 430.84 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C23H15ClN4O3 |
| Molecular Weight | 430.84 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chlorobenzylidene Standards
- 1-((2-Chlorobenzylidene)amino)-4-(4-nitrobenzylidene)-2-phenyl-1H-imidazol-5(4H)-one (CAS 126293-47-8)
- (E)-2-((4-chlorobenzylidene)amino)-1-(4-methoxybenzyl)-4-phenyl-1H-pyrrole-3-carbonitrile (CAS 338397-39-0)
- 5-(2-Chlorobenzylidene)-3-(2,4-dichlorobenzoyl)-2-thioxoimidazolidin-4-one (CAS 565196-32-9)
- (E)-2-(4-chlorobenzylidene)-7-(4-methoxyphenoxy)-3-phenyl-2,3-dihydro-1H-inden-1-one (CAS 337921-35-4)
- 5-(3-Chlorobenzylidene)-3-((6-methoxy-2-methylquinolin-4-yl)amino)-2-methyl-3,5-dihydro-4H-imidazol-4-one (CAS 85986-74-9)
- 1,2-Bis(4-chlorobenzylidene)hydrazine (CAS 3510-48-3)
- 5-(2-Chlorobenzylidene)-2-(4-isopropoxyphenyl)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (CAS 371216-13-6)
- 5-(3-Chlorobenzylidene)-2-(4-propoxyphenyl)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (CAS 606955-92-4)
Recommended Standards
- (1,10-Phenanthroline)(1,2-octanediolato)Pd(II) (CAS 1219966-88-7)
- N-(4-Chloro-3-(trifluoromethyl)phenyl)-2-((4-ethyl-5-(furan-2-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 618412-60-5)
- Ars-1323 (CAS 1698024-73-5)
- 3-Chloro-2-(1-(phenylsulfonyl)-3-(1H-1,2,4-triazol-5-yl)propyl)-5-(trifluoromethyl)pyridine (CAS 338420-82-9)
- N-((4-bromo-2-(trifluoromethyl)phenyl)carbamothioyl)benzamide (CAS 887266-94-6)
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