| CAS No. | 1049220-44-1 |
| Molecular Formula | C21H20FN3O3 |
| Molecular Weight | 381.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 381.40 g/mol gives 2-(2-Fluorophenoxy)-N-(2-(6-oxo-3-phenylpyridazin-1(6H)-yl)ethyl)propanamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-(2-Fluorophenoxy)-N-(2-(6-oxo-3-phenylpyridazin-1(6H)-yl)ethyl)propanamide (CAS 1049220-44-1), molecular formula C21H20FN3O3 and molecular weight 381.40 g/mol, is a CATO reference standard with documented purity and traceability.
2-(2-Fluorophenoxy)-N-(2-(6-oxo-3-phenylpyridazin-1(6H)-yl)ethyl)propanamide (C21H20FN3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
| Molecular Formula | C21H20FN3O3 |
| Molecular Weight | 381.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |