| CAS No. | 303997-17-3 |
| Molecular Formula | C24H21ClF3N3O7 |
| Molecular Weight | 555.89 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
The occurrence of Ethyl 5-[(E)-({[(4-chlorophenyl)methoxy]amino}methylidene)amino]-3-{2-[3-(trifluoromethyl)benzoyloxy]ethoxy}-1,2-oxazole-4-carboxylate is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Ethyl 5-[(E)-({[(4-chlorophenyl)methoxy]amino}methylidene)amino]-3-{2-[3-(trifluoromethyl)benzoyloxy]ethoxy}-1,2-oxazole-4-carboxylate (CAS 303997-17-3), molecular formula C24H21ClF3N3O7 and molecular weight 555.89 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, Ethyl 5-[(E)-({[(4-chlorophenyl)methoxy]amino}methylidene)amino]-3-{2-[3-(trifluoromethyl)benzoyloxy]ethoxy}-1,2-oxazole-4-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 555.89 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures Ethyl 5-[(E)-({[(4-chlorophenyl)methoxy]amino}methylidene)amino]-3-{2-[3-(trifluoromethyl)benzoyloxy]ethoxy}-1,2-oxazole-4-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
| Molecular Formula | C24H21ClF3N3O7 |
| Molecular Weight | 555.89 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |