2-(3-Chlorophenyl)-4-[3-(3,4-dimethoxyphenyl)-1,2,4-oxadiazol-5-yl]-1,2-dihydrophthalazin-1-one CAS 1291852-17-9
| CAS No. | 1291852-17-9 |
| Molecular Formula | C24H17ClN4O4 |
| Molecular Weight | 460.87 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-(3-Chlorophenyl)-4-[3-(3,4-dimethoxyphenyl)-1,2,4-oxadiazol-5-yl]-1,2-dihydrophthalazin-1-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.
2-(3-Chlorophenyl)-4-[3-(3,4-dimethoxyphenyl)-1,2,4-oxadiazol-5-yl]-1,2-dihydrophthalazin-1-one (CAS 1291852-17-9), molecular formula C24H17ClN4O4 and molecular weight 460.87 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C24H17ClN4O4, 2-(3-Chlorophenyl)-4-[3-(3,4-dimethoxyphenyl)-1,2,4-oxadiazol-5-yl]-1,2-dihydrophthalazin-1-one contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 460.87 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C24H17ClN4O4 |
| Molecular Weight | 460.87 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chlorophenyl Standards
- 2-(3-Chlorophenyl)-4-[3-(3,5-dimethoxyphenyl)-1,2,4-oxadiazol-5-yl]-1,2-dihydrophthalazin-1-one (CAS 1291857-25-4)
- N-(4-chlorophenyl)-1-((2,2-difluorobenzo[d][1,3]dioxol-5-yl)methyl)-N-isopropyl-2-oxo-1,2-dihydropyridine-3-carboxamide (CAS 400083-08-1)
- Ethyl 4-(4-chlorophenyl)-2-(2-(4-nitrophenoxy)acetamido)thiophene-3-carboxylate (CAS 374598-53-5)
- 3-(4-Chlorophenyl)-11,12-dimethoxy-8,9,13b,14-tetrahydro-6H-pyrazolo[5'',1'':2',3']pyrimido[4',5':4,5]pyrido[2,1-a]isoquinolin-6-one (CAS 685107-16-8)
- Methyl 5-(4-chlorophenyl)-4,6-dioxo-1,3-diphenyl-octahydropyrrolo[3,4-c]pyrrole-1-carboxylate (CAS 317821-76-4)
- 3-(4-Chlorophenyl)-5-((2,4-dichlorobenzyl)thio)-4-(p-tolyl)-4H-1,2,4-triazole (CAS 443740-26-9)
- 3-(4-Chlorophenyl)-5-((2,6-dichlorobenzyl)thio)-4-(p-tolyl)-4H-1,2,4-triazole (CAS 476485-86-6)
- 3-(4-Chlorophenyl)-5-((3,4-dichlorobenzyl)thio)-4-(p-tolyl)-4H-1,2,4-triazole (CAS 477332-69-7)
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