(4S)-3-[(2R,3R)-4-Chloro-3-(2,4-difluorophenyl)-3-hydroxy-2-methyl-1-oxobutyl]-4-(phenylmethyl)-2-oxazolidinone CAS 169218-76-2
| CAS No. | 169218-76-2 |
| Molecular Formula | C21H20ClF2NO4 |
| Molecular Weight | 423.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C21H20ClF2NO4, (4S)-3-[(2R,3R)-4-Chloro-3-(2,4-difluorophenyl)-3-hydroxy-2-methyl-1-oxobutyl]-4-(phenylmethyl)-2-oxazolidinone contains a flavonoid core, an amide 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 423.84 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).
(4S)-3-[(2R,3R)-4-Chloro-3-(2,4-difluorophenyl)-3-hydroxy-2-methyl-1-oxobutyl]-4-(phenylmethyl)-2-oxazolidinone (CAS 169218-76-2) is a high-purity analytical reference standard with the molecular formula C21H20ClF2NO4 and a molecular weight of 423.84 g/mol.
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.
Physical & Chemical Properties
| Molecular Formula | C21H20ClF2NO4 |
| Molecular Weight | 423.84 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2005 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
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