1-(2-(9-Bromo-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(4-hydroxybenzylidene)-3-methyl-1H-pyrazol-5(4H)-one CAS 119457-25-9
| CAS No. | 119457-25-9 |
| Molecular Formula | C27H18BrN5O3 |
| Molecular Weight | 540.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 540.37 g/mol gives 1-(2-(9-Bromo-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(4-hydroxybenzylidene)-3-methyl-1H-pyrazol-5(4H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 1-(2-(9-Bromo-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(4-hydroxybenzylidene)-3-methyl-1H-pyrazol-5(4H)-one (CAS 119457-25-9), a certified reference material (molecular formula C27H18BrN5O3, MW 540.37 g/mol) for analytical method development and quality control.
The molecular framework of 1-(2-(9-Bromo-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(4-hydroxybenzylidene)-3-methyl-1H-pyrazol-5(4H)-one (C27H18BrN5O3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures 1-(2-(9-Bromo-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(4-hydroxybenzylidene)-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.
Physical & Chemical Properties
| Molecular Formula | C27H18BrN5O3 |
| Molecular Weight | 540.37 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 | Br-containing |
| Nitrogen Atoms | 5 |
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- 5-Chloro-4-methoxy-3,3-dimethyl-2,3-dihydrobenzofuran (CAS 1597548-47-4)
- [(5-Isopropyl-3-isoxazolyl)methyl]methylamine hydrochloride (CAS 1269052-67-6)
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