5-Ethyl-1,3-dihydro-1-(2,3,5,6-tetrafluorophenyl)-2H-indol-2-one CAS 220991-61-7
| CAS No. | 220991-61-7 |
| Molecular Formula | C16H11F4NO |
| Molecular Weight | 309.26 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.
5-Ethyl-1,3-dihydro-1-(2,3,5,6-tetrafluorophenyl)-2H-indol-2-one (CAS 220991-61-7) is a high-purity analytical reference standard with the molecular formula C16H11F4NO and a molecular weight of 309.26 g/mol.
Based on its molecular formula C16H11F4NO, 5-Ethyl-1,3-dihydro-1-(2,3,5,6-tetrafluorophenyl)-2H-indol-2-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 309.26 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).
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 | C16H11F4NO |
| Molecular Weight | 309.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
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