1-(2,4-Dichlorophenyl)-4-hydroxy-6-oxo-1,6-dihydropyridazine-3-carboxamide CAS 320419-41-8
| CAS No. | 320419-41-8 |
| Molecular Formula | C11H7Cl2N3O3 |
| Molecular Weight | 300.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-(2,4-Dichlorophenyl)-4-hydroxy-6-oxo-1,6-dihydropyridazine-3-carboxamide (CAS 320419-41-8) is a high-purity analytical reference standard with the molecular formula C11H7Cl2N3O3 and a molecular weight of 300.10 g/mol.
1-(2,4-Dichlorophenyl)-4-hydroxy-6-oxo-1,6-dihydropyridazine-3-carboxamide (C11H7Cl2N3O3) contains a nitrogen-containing heterocyclic scaffold, 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. 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 | C11H7Cl2N3O3 |
| Molecular Weight | 300.10 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 9.0 |
| 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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- 4-(2-(4-(4-Hydroxyphenyl)-4-methylcyclohexyl)propan-2-yl)phenol (CAS 1965-08-8)
- 5-Nitro-3-pyrazolecarboxylic Acid Ethyl Ester (CAS 39846-84-9)
- 4-Fluoronitrobenzene-d4 (CAS 1219802-01-3)
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- Ethyl 5-(4-iodophenyl)oxazole-4-carboxylate (CAS 916674-32-3)
- Gastric Inhibitory Polypeptide (3-42) (human) trifluoroacetate salt (CAS 1802086-25-4)
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