N-[(E)-2-(3-Methyl-4-nitro-1,2-oxazol-5-yl)ethenyl]-4-phenoxyaniline CAS 240799-81-9
| CAS No. | 240799-81-9 |
| Molecular Formula | C18H15N3O4 |
| Molecular Weight | 337.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of N-[(E)-2-(3-Methyl-4-nitro-1,2-oxazol-5-yl)ethenyl]-4-phenoxyaniline is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies N-[(E)-2-(3-Methyl-4-nitro-1,2-oxazol-5-yl)ethenyl]-4-phenoxyaniline (CAS 240799-81-9), a certified reference material (molecular formula C18H15N3O4, MW 337.33 g/mol) for analytical method development and quality control.
Based on its molecular formula C18H15N3O4, N-[(E)-2-(3-Methyl-4-nitro-1,2-oxazol-5-yl)ethenyl]-4-phenoxyaniline contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 337.33 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 N-[(E)-2-(3-Methyl-4-nitro-1,2-oxazol-5-yl)ethenyl]-4-phenoxyaniline 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.
Physical & Chemical Properties
| Molecular Formula | C18H15N3O4 |
| Molecular Weight | 337.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Recommended Standards
- N-(2-hydrazinyl-1-(4-hydroxyphthalazin-1-yl)-2-oxoethyl)benzamide (CAS 49660-30-2)
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- tert-butyl allyl(3,5-dinitrobenzyl)carbamate (CAS 2009210-29-9)
- 5-(Aminomethyl)-2-furanmethanol (CAS 88910-22-9)
- Ethyl 3-(2-methoxy-5-nitrophenyl)-1H-1,2,4-triazole-5-carboxylate (CAS 1416339-50-8)
- Ethyl 2-hydroxy-3-(quinoxalin-2-yl)propanoate (CAS 6639-94-7)
- 2-Chloro-7-methoxyquinazolin-4-amine (CAS 1107694-98-3)
- 1-(3,5-Difluorophenyl)-1h-pyrrole (CAS 1153146-76-9)
- 2-Oxo-2-(p-tolyl)ethyl 2-(4-methoxyphenyl)-6-methylquinoline-4-carboxylate (CAS 488108-80-1)
- 1-(2-(Chloromethyl)benzo[d]oxazol-7-yl)ethanone (CAS 1135283-66-7)
- 3-(2,1,3-Benzothiadiazol-5-yl)alaninehydrochloride (CAS 20361-50-6)
- 4-Amino-6-chloro-2-(difluoromethyl)nicotinonitrile (CAS 1806806-62-1)
- Myelin Basic Protein (85-99) Peptide Antagonist (CAS 444305-16-2)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com