4-Chloro-3-oxo-2-(quinolin-2(1H)-ylidene)butanenitrile CAS 128914-79-4
| CAS No. | 128914-79-4 |
| Molecular Formula | C13H9ClN2O |
| Molecular Weight | 244.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Chloro-3-oxo-2-(quinolin-2(1H)-ylidene)butanenitrile (CAS 128914-79-4), a certified reference material (molecular formula C13H9ClN2O, MW 244.68 g/mol) for analytical method development and quality control.
Based on its molecular formula C13H9ClN2O, 4-Chloro-3-oxo-2-(quinolin-2(1H)-ylidene)butanenitrile contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 244.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C13H9ClN2O |
| Molecular Weight | 244.68 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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- Insulin Degludec Impurity 19 (CAS CATO-C4X-215719)
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