1-[(E)-2-Phenylethenyl]-4-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]quinoxaline CAS 338968-42-6
| CAS No. | 338968-42-6 |
| Molecular Formula | C18H11F3N4 |
| Molecular Weight | 340.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 340.30 g/mol gives 1-[(E)-2-Phenylethenyl]-4-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]quinoxaline distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 1-[(E)-2-Phenylethenyl]-4-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]quinoxaline (CAS 338968-42-6), a certified reference material (molecular formula C18H11F3N4, MW 340.30 g/mol) for analytical method development and quality control.
Based on its molecular formula C18H11F3N4, 1-[(E)-2-Phenylethenyl]-4-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]quinoxaline contains a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 340.30 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.
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.
As a certified reference material (CRM), 1-[(E)-2-Phenylethenyl]-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 | C18H11F3N4 |
| Molecular Weight | 340.30 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related E Standards
- 7-[(Z)-2-Phenylethenyl]-2-{[(2E)-3-phenylprop-2-en-1-yl]sulfanyl}-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 1164492-92-5)
- 2-[(1E)-2-Phenylethenyl]-3-(phenylmethoxy)-4H-pyran-4-one (CAS 1206102-05-7)
- 1-(Trans-2-Phenylethenyl)-4-(phenylethynyl)benzene (CAS 173035-17-1)
- 9-[(E)-2-Phenylethenyl]-2,4-bis(trifluoromethyl)-[1,2,4]triazolo[4,3-a]1,8-naphthyridine (CAS 338962-23-5)
- 2-({4-[(E)-2-phenylethenyl]pyrimidin-2-yl}sulfanyl)acetonitrile (CAS 338407-73-1)
- 1-(2-phenylethenyl)-4-(trifluoromethyl)benzene (CAS 124562-04-5)
- [(2-Phenylethenyl)sulfonyl]benzene (CAS 5418-11-1)
- ethyl 2-(2-phenylethenyl)-1,3-oxazole-4-carboxylate (CAS 107367-69-1)
Recommended Standards
- (3S,4R,5R)-5-((Benzoyloxy)methyl)-4-fluorotetrahydrofuran-2,3-diyl diacetate (CAS 2316640-49-8)
- 1-Phenyl-3-(pyridin-3-yl)-6-(trifluoromethyl)-1H-pyrazolo[4,3-b]pyridine (CAS 306977-36-6)
- (3E)-1,1,1-trifluoro-5-[(2Z)-1,3,3-trimethyl-6-nitro-2,3-dihydro-1H-indol-2-ylidene]pent-3-en-2-one (CAS 379239-99-3)
- 2-((1-Cyanocyclopentyl)amino)-2-oxoethyl 2-(trifluoromethyl)benzoate (CAS 875156-46-0)
- 1-(4-(6-(4-Ethoxyphenyl)pyridazin-3-yl)piperazin-1-yl)-2,2,2-trifluoroethan-1-one (CAS 1040639-74-4)
- N-(3,4-Dimethoxyphenyl)formamide (CAS 33904-02-8)
- 2-Chloro-6-cyanoisonicotinic acid (CAS 1060812-14-7)
- Levofloxacin Impurity 32 (CAS 1329833-82-0)
- N-Desthiobiotin-N-bis(PEG4-NHS ester) (CAS 2353409-61-5)
- 3-Amino-7-ethyl-1,3-dihydro-2H-indol-2-onehydrochloride (CAS 1332528-28-5)
- Ethyl 4-amino-2-thioxo-2,5-dihydropyrimidine-5-carboxylate (CAS 312748-25-7)
- (2e)-3-[5-(2-chlorophenyl)thiophen-2-yl]prop-2-enoic acid (CAS 2230605-60-2)
- Ethyl 2-(4-formylbenzamido)acetate (CAS 1987453-37-1)
- Tirzepatide Impurity 38 (CAS CATO-C4X-324038)
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