(E)-4-((3-chloro-5-(trifluoromethyl)pyridin-2-yl)oxy)-N-(2-nitro-2-(phenylsulfonyl)vinyl)aniline CAS 338397-55-0
| CAS No. | 338397-55-0 |
| Molecular Formula | C20H13ClF3N3O5S |
| Molecular Weight | 499.85 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C20H13ClF3N3O5S, (E)-4-((3-chloro-5-(trifluoromethyl)pyridin-2-yl)oxy)-N-(2-nitro-2-(phenylsulfonyl)vinyl)aniline contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 499.85 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
(E)-4-((3-chloro-5-(trifluoromethyl)pyridin-2-yl)oxy)-N-(2-nitro-2-(phenylsulfonyl)vinyl)aniline (CAS 338397-55-0) is a high-purity analytical reference standard with the molecular formula C20H13ClF3N3O5S and a molecular weight of 499.85 g/mol.
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.
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 | C20H13ClF3N3O5S |
| Molecular Weight | 499.85 g/mol |
| 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 |
| Sulfur Atoms | 1 |
Related E Standards
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Recommended Standards
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- tert-Butyl ((1-benzylpyrrolidin-3-yl)methyl)(methyl)carbamate (CAS 802983-65-9)
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- Semaglutide Impurity 149 (CAS CATO-C4X-2226149)
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