5-Chloro-1-[(4-chlorophenyl)methyl]-N-(4-methoxyphenyl)-2-oxo-1,2-dihydropyridine-3-carboxamide CAS 338977-30-3
| CAS No. | 338977-30-3 |
| Molecular Formula | C20H16Cl2N2O3 |
| Molecular Weight | 403.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Chloro-1-[(4-chlorophenyl)methyl]-N-(4-methoxyphenyl)-2-oxo-1,2-dihydropyridine-3-carboxamide (CAS 338977-30-3) is a high-purity analytical reference standard with the molecular formula C20H16Cl2N2O3 and a molecular weight of 403.26 g/mol.
5-Chloro-1-[(4-chlorophenyl)methyl]-N-(4-methoxyphenyl)-2-oxo-1,2-dihydropyridine-3-carboxamide (C20H16Cl2N2O3) 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).
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 | C20H16Cl2N2O3 |
| Molecular Weight | 403.26 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 5-Chloro-1-(3-chlorobenzyl)-N-(4-methoxyphenyl)-6-oxo-1,6-dihydropyridine-3-carboxamide (CAS 338977-35-8)
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Recommended Standards
- n-(1-((2,5-Dichlorophenyl)amino)-2-oxo-2-(p-tolyl)ethyl)furan-2-carboxamide (CAS 425631-08-9)
- 3-{1-[(2,6-dichlorophenyl)methyl]-6-oxo-1,6-dihydropyridin-3-yl}-1-[(pyridin-3-yl)methyl]urea (CAS 338785-03-8)
- N-(1-((3,4-Dichlorophenyl)amino)-1-oxo-3-phenylpropan-2-yl)furan-2-carboxamide (CAS 956140-65-1)
- 20-Bromo-3,6,9,12,15,18-hexaoxaicosanoic acid (CAS 411241-11-7)
- (3-(Piperidin-1-ylmethyl)phenyl)boronic acid hydrochloride (CAS 1072946-21-4)
- Methyl 3-(chlorosulfonyl)-5-(o-tolyl)thiophene-2-carboxylate (CAS 1375474-10-4)
- 5-(5-Chloro-2-thienyl)-1,3,4-oxadiazole-2-thiol (CAS 115903-57-6)
- Methyl 2-(cyclopropanecarboxamido)-5-((2-ethoxyphenyl)carbamoyl)-4-methylthiophene-3-carboxylate (CAS 505095-60-3)
- 3-(4-Fluorophenyl)pyridine-2-carbonitrile (CAS 1214340-31-4)
- 1-Chloro-4-(chloro(4-fluorophenyl)methyl)benzene (CAS 64583-39-7)
- 5-chloro-2-(ethanesulfonyl)benzoic acid (CAS 1384428-08-3)
- N-(5-(Cyclopropylmethyl)-2-hydroxyphenyl)methanesulfonamide (CAS 1243462-62-5)
- (2,4-Dichloro-6-methylphenoxy)acetic acid (CAS 13333-87-4)
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