1-(2-(2-Chloro-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(1-(4-chlorophenyl)ethylidene)-3-methyl-1H-pyrazol-5(4H)-one CAS 119457-23-7
| CAS No. | 119457-23-7 |
| Molecular Formula | C28H19Cl2N5O2 |
| Molecular Weight | 528.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-(2-(2-Chloro-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(1-(4-chlorophenyl)ethylidene)-3-methyl-1H-pyrazol-5(4H)-one is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1-(2-(2-Chloro-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(1-(4-chlorophenyl)ethylidene)-3-methyl-1H-pyrazol-5(4H)-one (CAS 119457-23-7), molecular formula C28H19Cl2N5O2 and molecular weight 528.39 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 1-(2-(2-Chloro-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(1-(4-chlorophenyl)ethylidene)-3-methyl-1H-pyrazol-5(4H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 528.39 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), 1-(2-(2-Chloro-6H-indolo[2,3-b]quinoxalin-6-yl)acetyl)-4-(1-(4-chlorophenyl)ethylidene)-3-methyl-1H-pyrazol-5(4H)-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C28H19Cl2N5O2 |
| Molecular Weight | 528.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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 |
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Recommended Standards
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- 4-((4-Bromophenyl)(hydroxy)methylene)-1-(5-(tert-butyl)oxazol-3(2H)-yl)-5-(4-nitrophenyl)pyrrolidine-2,3-dione (CAS 5667-64-1)
- 3-(4-(2-(4-(4-bromo-2-fluorophenyl)piperazin-1-yl)ethyl)-3-methyl-1H-indazol-1-yl)piperidine-2,6-dione (CAS CATO-C3D-263206)
- 4-(Prop-1-en-2-yl)cyclohexanecarboxylic acid (CAS 32676-16-7)
- 2-Chloro-1-[4-(propan-2-yl)phenyl]ethan-1-ol (CAS 176646-89-2)
- 7-Bromo-1-methyl-[1,2,4]triazolo[4,3-a]quinolin-4-amine (CAS 1300031-87-1)
- 2,5,6-Trimethyl-4-nitro-1H-benzo[d]imidazole (CAS 173037-03-1)
- meso-Dihydroguaiaretic acid (CAS 66322-34-7)
- 1-(1-Chloroethyl)-4-isopropylbenzene (CAS 13372-43-5)
- (4-Nitrophenyl)(p-tolyl)sulfane (CAS 22865-48-1)
- N'-(1-(3-aminophenyl)ethylidene)-2-iodobenzohydrazide (CAS 314283-29-9)
- 1,6-diazaspiro[3.6]decan-2-one (CAS 2791275-30-2)
- Peptide 442 (CAS CATO-CPTD788442)
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