7-Fluoro-2-methyl-5-oxo-N-(3-(trifluoromethyl)phenyl)-5H-chromeno[2,3-b]pyridine-3-carboxamide CAS 338778-21-5
| CAS No. | 338778-21-5 |
| Molecular Formula | C21H12F4N2O3 |
| Molecular Weight | 416.33 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.
7-Fluoro-2-methyl-5-oxo-N-(3-(trifluoromethyl)phenyl)-5H-chromeno[2,3-b]pyridine-3-carboxamide (CAS 338778-21-5), molecular formula C21H12F4N2O3 and molecular weight 416.33 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C21H12F4N2O3, 7-Fluoro-2-methyl-5-oxo-N-(3-(trifluoromethyl)phenyl)-5H-chromeno[2,3-b]pyridine-3-carboxamide contains a steroid core, 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 416.33 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.
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 | C21H12F4N2O3 |
| Molecular Weight | 416.33 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
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