N-[(4-Chlorophenyl)methoxy]-N-{[(4E)-5-oxo-2-phenyl-4,5-dihydro-1,3-oxazol-4-ylidene]methyl}acetamide CAS 339028-71-6
| CAS No. | 339028-71-6 |
| Molecular Formula | C19H15ClN2O4 |
| Molecular Weight | 370.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of N-[(4-Chlorophenyl)methoxy]-N-{[(4E)-5-oxo-2-phenyl-4,5-dihydro-1,3-oxazol-4-ylidene]methyl}acetamide is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
N-[(4-Chlorophenyl)methoxy]-N-{[(4E)-5-oxo-2-phenyl-4,5-dihydro-1,3-oxazol-4-ylidene]methyl}acetamide (CAS 339028-71-6), molecular formula C19H15ClN2O4 and molecular weight 370.79 g/mol, is a CATO reference standard with documented purity and traceability.
N-[(4-Chlorophenyl)methoxy]-N-{[(4E)-5-oxo-2-phenyl-4,5-dihydro-1,3-oxazol-4-ylidene]methyl}acetamide (C19H15ClN2O4) contains a flavonoid 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C19H15ClN2O4 |
| Molecular Weight | 370.79 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 | 2 |
Related N Standards
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- Methyl 2-(3-(2-chlorophenyl)-5-methylisoxazole-4-carboxamido)benzoate (CAS 301680-63-7)
- N-(2-Chlorophenyl)-3-(5-(3-nitrophenyl)furan-2-yl)propanamide (CAS 853329-17-6)
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- N-(4-chlorophenyl)-2-(1-(6-methylpyridin-2-yl)-1H-imidazole-4-carbonyl)hydrazine-1-carboxamide (CAS 478077-76-8)
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Recommended Standards
- N-(benzo[d][1,3]dioxol-5-ylmethyl)-3-(2-chlorophenyl)-5-methylisoxazole-4-carboxamide (CAS 312319-23-6)
- N4, N5-Dinitroso Clozapine EP Impurity C (CAS CATO-C4X-134024)
- Rebamipide (CAS 90098-04-7)
- Rebamipide Impurity 2 (CAS 90098-06-9)
- (2E)-1-(4-Ethylphenyl)-3-phenylprop-2-en-1-one (CAS 26708-48-5)
- Chloromethyl 2-chloroacetate (CAS 6135-23-5)
- 5-(1-Aminoethyl)-N-ethyl-N,4-dimethylpyridin-2-amine (CAS 1355193-32-6)
- 2-(4,5-Dihydro-1H-imidazol-2-yl)-N-ethylhydrazinecarboxamide (CAS 691839-78-8)
- (3-Chloro-4-(difluoromethoxy)phenyl)methanol (CAS 1249809-88-8)
- 1-[2-(propan-2-yl)-1,3-thiazol-4-yl]ethan-1-amine dihydrochloride (CAS 1306603-67-7)
- (1H-pyrrolo[3,2-c]pyridin-2-yl)methanol (CAS 1263414-02-3)
- 1-(5-Methoxy-1-methyl-1H-indol-3-yl)-N-methylmethanamine (CAS 149685-76-7)
- 2,6-Dihydroxy-4-methylbenzoic acid (CAS 480-67-1)
- Nonapeptide-1 (CAS 158563-45-2)
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