1-(2,4-dichlorophenyl)-4-(trifluoromethyl)[1,2,4]triazolo[4,3-a]quinoxaline CAS 338773-18-5
| CAS No. | 338773-18-5 |
| Molecular Formula | C16H7Cl2F3N4 |
| Molecular Weight | 383.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(2,4-dichlorophenyl)-4-(trifluoromethyl)[1,2,4]triazolo[4,3-a]quinoxaline (CAS 338773-18-5) is a high-purity analytical reference standard with the molecular formula C16H7Cl2F3N4 and a molecular weight of 383.15 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine/chlorine substitution, 1-(2,4-dichlorophenyl)-4-(trifluoromethyl)[1,2,4]triazolo[4,3-a]quinoxaline is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 383.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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-(2,4-dichlorophenyl)-4-(trifluoromethyl)[1,2,4]triazolo[4,3-a]quinoxaline 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 | C16H7Cl2F3N4 |
| Molecular Weight | 383.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
Related dichlorophenyl Standards
- 1-(2,4-Dichlorophenyl)-N-(2,4-difluorophenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 338398-25-7)
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- 1-(2,5-dichlorophenyl)-N-(3,4-difluorophenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 338407-93-5)
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- N-(2,4-dichlorophenyl)-1-(2,4-difluorophenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 338397-98-1)
- n-(2,5-Dichlorophenyl)-2-{[(3,4-dimethoxyphenyl)methyl]amino}propanamide (CAS 1049727-35-6)
- 1-[(2,4-Dichlorophenyl)methoxy]-2-(4-methylphenyl)-1H-1,3-benzodiazole (CAS 339009-66-4)
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Recommended Standards
- Dimethyl(trifluoroacetylacetonate)gold(III) (CAS 63470-53-1)
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- 4-Chloro-2-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-5-((2-hydroxyethyl)(methyl)amino)pyridazin-3(2H)-one (CAS 338399-91-0)
- 2-(((2-Chlorophenyl)thio)methyl)-5-(3,4,5-trimethoxyphenyl)-1,3,4-oxadiazole (CAS 869357-04-0)
- 3-Chloropyrazolo[1,5-a]pyridine-5-carboxylic acid (CAS 876379-80-5)
- Ruberythric acid (CAS 152-84-1)
- 2-Methylanthraquinone (CAS 84-54-8)
- (S)-2-Hydroxy-2’-[(R)-hydroxy(1-naphthyl)methyl]-[1,1’-binaphthalene] (CAS 1498319-69-9)
- Fluticasone Furoate 11-Keto Impurity (CAS 397864-56-1)
- 6-Acetyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic acid (CAS 1788788-79-3)
- 2-Chloro-n-[6-(piperidin-1-yl)pyridin-3-yl]acetamide (CAS 1011617-54-1)
- 5-Bromo-3-cyclopropyl-1,2,4-thiadiazole (CAS 1494127-23-9)
- Palmitoyl Tripeptide-5 TFA (CAS 623172-55-4（free base）)
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