Methyl 3-(2,6-dichlorophenyl)-5-[(1Z)-1-(dimethylamino)-4-ethoxy-3,4-dioxobut-1-en-2-yl]-1,2-oxazole-4-carboxylate CAS 1164530-56-6
| CAS No. | 1164530-56-6 |
| Molecular Formula | C19H18Cl2N2O6 |
| Molecular Weight | 441.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Methyl 3-(2,6-dichlorophenyl)-5-[(1Z)-1-(dimethylamino)-4-ethoxy-3,4-dioxobut-1-en-2-yl]-1,2-oxazole-4-carboxylate (CAS 1164530-56-6) is a high-purity analytical reference standard with the molecular formula C19H18Cl2N2O6 and a molecular weight of 441.26 g/mol.
Methyl 3-(2,6-dichlorophenyl)-5-[(1Z)-1-(dimethylamino)-4-ethoxy-3,4-dioxobut-1-en-2-yl]-1,2-oxazole-4-carboxylate (C19H18Cl2N2O6) 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.
Physical & Chemical Properties
| Molecular Formula | C19H18Cl2N2O6 |
| Molecular Weight | 441.26 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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