3-(2-(4-Chlorobenzylidene)hydrazinyl)quinoxalin-2(1H)-one CAS 129227-26-5
| CAS No. | 129227-26-5 |
| Molecular Formula | C15H11ClN4O |
| Molecular Weight | 298.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(2-(4-Chlorobenzylidene)hydrazinyl)quinoxalin-2(1H)-one (CAS 129227-26-5), molecular formula C15H11ClN4O and molecular weight 298.73 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H11ClN4O, 3-(2-(4-Chlorobenzylidene)hydrazinyl)quinoxalin-2(1H)-one 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 298.73 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Chlorobenzylidene Standards
- 5-(3-Chlorobenzylidene)-3-methyl-2-selenoxoimidazolidin-4-one (CAS 88568-81-4)
- 2-Benzyl-4-(4-chlorobenzylidene)oxazol-5(4H)-one (CAS 121487-23-8)
- 4-(2-Chlorobenzylidene)-2-(p-tolyl)oxazol-5(4H)-one (CAS 16352-74-2)
- 3-((4-Chlorobenzylidene)amino)-2-methylquinazolin-4(3H)-one (CAS 1769-12-6)
- 4-(4-Chlorobenzylidene)-2-(p-tolyl)oxazol-5(4H)-one (CAS 90124-87-1)
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Recommended Standards
- N-(4-((3-chloropyrazin-2-yl)oxy)phenyl)pyridin-2-amine (CAS 1206970-13-9)
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- 1-[4-chloro-2-(5-methylpyrazol-1-yl)phenyl]-2,2,2-trifluoro-ethanone (CAS 1125828-32-1)
- 2-Chloro-1-(4-((3-nitropyridin-2-yl)amino)piperidin-1-yl)ethanone (CAS 1417793-89-5)
- [3-(dimethylamino)propyl]urea hydrochloride (CAS 110181-34-5)
- 2-(Tert-butyl) 5-methyl 3,3-dimethylisoindoline-2,5-dicarboxylate (CAS 2227205-67-4)
- 2-(9H-Fluoren-9-ylidene)-2-fluoroacetic acid (CAS 400653-14-7)
- 3,3,4,5,5,5-Hexafluoro-2-pentanone (CAS 60249-67-4)
- 3,5-Dibromo-2-(prop-2-yn-1-yloxy)benzaldehyde (CAS 792945-72-3)
- 3-Isopropoxybenzaldehyde (CAS 75792-33-5)
- 1-Chloromethyl-Isoquinoline (CAS 27311-65-5)
- 2-(Furan-2-yl)-1-isobutylpyrrolidine (CAS 1355180-76-5)
- Cimoxatone (CAS 73815-11-9)
- Semaglutide impurity 195 (CAS CATO-C4X-2226195)
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