1-(4-Chlorophenyl)-4-oxo-N-(o-tolyl)-1,4-dihydropyridazine-3-carboxamide CAS 478063-35-3
| CAS No. | 478063-35-3 |
| Molecular Formula | C18H14ClN3O2 |
| Molecular Weight | 339.78 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(4-Chlorophenyl)-4-oxo-N-(o-tolyl)-1,4-dihydropyridazine-3-carboxamide (C18H14ClN3O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
1-(4-Chlorophenyl)-4-oxo-N-(o-tolyl)-1,4-dihydropyridazine-3-carboxamide (CAS 478063-35-3), molecular formula C18H14ClN3O2 and molecular weight 339.78 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C18H14ClN3O2 |
| Molecular Weight | 339.78 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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- Semaglutide Impurity 185 (CAS CATO-C4X-2226185)
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