1-(2-(2-Chloro-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(4-hydroxy-3-methoxybenzylidene)-3-methyl-1H-pyrazol-5(4H)-one CAS 119457-16-8
| CAS No. | 119457-16-8 |
| Molecular Formula | C28H20ClN5O4 |
| Molecular Weight | 525.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 1-(2-(2-Chloro-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(4-hydroxy-3-methoxybenzylidene)-3-methyl-1H-pyrazol-5(4H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
1-(2-(2-Chloro-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(4-hydroxy-3-methoxybenzylidene)-3-methyl-1H-pyrazol-5(4H)-one (CAS 119457-16-8) is a high-purity analytical reference standard with the molecular formula C28H20ClN5O4 and a molecular weight of 525.94 g/mol.
Based on its molecular formula C28H20ClN5O4, 1-(2-(2-Chloro-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(4-hydroxy-3-methoxybenzylidene)-3-methyl-1H-pyrazol-5(4H)-one contains a steroid core, 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 525.94 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C28H20ClN5O4 |
| Molecular Weight | 525.94 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 21.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Chloro Standards
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com