Methyl 3-(2-chloro-6-fluorophenyl)-5-[(1Z)-1-(dimethylamino)-4-ethoxy-3,4-dioxobut-1-en-2-yl]-1,2-oxazole-4-carboxylate CAS 1164473-36-2
| CAS No. | 1164473-36-2 |
| Molecular Formula | C19H18ClFN2O6 |
| Molecular Weight | 424.81 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.
CATO supplies Methyl 3-(2-chloro-6-fluorophenyl)-5-[(1Z)-1-(dimethylamino)-4-ethoxy-3,4-dioxobut-1-en-2-yl]-1,2-oxazole-4-carboxylate (CAS 1164473-36-2), a certified reference material (molecular formula C19H18ClFN2O6, MW 424.81 g/mol) for analytical method development and quality control.
The molecular framework of Methyl 3-(2-chloro-6-fluorophenyl)-5-[(1Z)-1-(dimethylamino)-4-ethoxy-3,4-dioxobut-1-en-2-yl]-1,2-oxazole-4-carboxylate (C19H18ClFN2O6) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C19H18ClFN2O6 |
| Molecular Weight | 424.81 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 | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- 4-(5-(2-(4-Chloro-2,6-difluorophenoxy)propan-2-yl)-4-methyl-4H-1,2,4-triazol-3-yl)-3-fluorobenzamide (CAS 1204178-50-6)
- 2-(((4-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)oxy)phenyl)imino)methyl)-3-hydroxy-5-methylcyclohex-2-en-1-one (CAS 946387-27-5)
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Recommended Standards
- Cyclophosphamide impurity 28 (CAS CATO-C4X-230628)
- Dimethyl 2,2'-((2-(2-chloro-6-fluorobenzyl)-4-formyl-1,3-phenylene)bis(oxy))diacetate (CAS 303994-40-3)
- (5-((2-Chlorobenzyl)sulfonyl)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl propionate (CAS 955962-84-2)
- 6-(4-Chlorophenyl)-2-(naphthalen-2-yloxy)-4-(trifluoromethyl)pyridine-3-carbonitrile (CAS 338963-46-5)
- 1-(3-(5-Amino-1H-benzo[d]imidazol-1-yl)phenyl)ethanone (CAS 88538-65-2)
- 6-Chloro-2-(5-ethylthiophen-2-yl)quinoline-4-carboxylic acid (CAS 438215-52-2)
- n-(4-Fluorophenyl)-2-(p-tolyl)thiazole-4-carboxamide (CAS 400079-13-2)
- 2-(4-methylphenyl)-1H-benzimidazole (CAS 120-03-6)
- (1-(1-Methyl-1H-benzo[d]imidazol-2-yl)isoquinolin-2(1H)-yl)(phenyl)methanone (CAS 106011-94-3)
- 4-Chloro-7-fluoro-1H-indole-2-carboxylic acid (CAS 1388049-76-0)
- 1-Cyclopropyl-7-methyl-4-oxo-2-thioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine-5-carboxylic acid (CAS 937599-76-3)
- α-Methyl-D,L-m-tyrosine (CAS 305-96-4)
- Cetrorelix Impurity 31 (CAS CATO-C4X-201431)
- Des-Phe22-Tirzepatide (CAS CATO-CPTD788951)
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