3-[(E)-2-[(2-Chlorophenyl)methylidene]hydrazin-1-yl]-1,2-dihydroquinoxalin-2-one CAS 338419-72-0
| CAS No. | 338419-72-0 |
| Molecular Formula | C15H11ClN4O |
| Molecular Weight | 298.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-[(E)-2-[(2-Chlorophenyl)methylidene]hydrazin-1-yl]-1,2-dihydroquinoxalin-2-one.
CATO supplies 3-[(E)-2-[(2-Chlorophenyl)methylidene]hydrazin-1-yl]-1,2-dihydroquinoxalin-2-one (CAS 338419-72-0), a certified reference material (molecular formula C15H11ClN4O, MW 298.73 g/mol) for analytical method development and quality control.
3-[(E)-2-[(2-Chlorophenyl)methylidene]hydrazin-1-yl]-1,2-dihydroquinoxalin-2-one (C15H11ClN4O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C15H11ClN4O |
| Molecular Weight | 298.73 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 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related E Standards
- N-(5-(4-Chlorophenyl)-1,3,4-oxadiazol-2-yl)benzimidamide (CAS 132380-89-3)
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- 3-[(E)-2-[(3-Chlorophenyl)methylidene]hydrazin-1-yl]-1,2-dihydroquinoxalin-2-one (CAS 338419-74-2)
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