3-Oxo-7-(trifluoromethyl)-3,4-dihydroquinoxaline-2-carboxylic acid CAS 219485-21-9
| CAS No. | 219485-21-9 |
| Molecular Formula | C10H5F3N2O3 |
| Molecular Weight | 258.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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 supplies 3-Oxo-7-(trifluoromethyl)-3,4-dihydroquinoxaline-2-carboxylic acid (CAS 219485-21-9), a certified reference material (molecular formula C10H5F3N2O3, MW 258.15 g/mol) for analytical method development and quality control.
Structurally, 3-Oxo-7-(trifluoromethyl)-3,4-dihydroquinoxaline-2-carboxylic acid (C10H5F3N2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 258.15 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 3-Oxo-7-(trifluoromethyl)-3,4-dihydroquinoxaline-2-carboxylic acid 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 | C10H5F3N2O3 |
| Molecular Weight | 258.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2019 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Oxo Standards
- 3-[5-(Trifluoromethyl)-1,2,4-oxadiazol-3-yl]benzoic Acid (CAS 1092400-82-2)
- 5-(3-(Trifluoromethyl)phenyl)-1,2,4-oxadiazole-3-carboxylic acid (CAS 163720-44-3)
- 3-(3-(Trifluoromethyl)phenyl)-1,2,4-oxadiazole-5-carboxylic acid (CAS 944905-74-2)
- 3-(4-(Trifluoromethyl)phenyl)-1,2,4-oxadiazole-5-carboxylic acid (CAS 944906-47-2)
- 4-(5-Trifluoromethyl-1,2,4-oxadiazol-3-yl)-benzoic Acid (CAS 340736-76-7)
- 5-(3-(Trifluoromethyl)phenyl)-1,3,4-oxadiazole-2-carboxylic acid (CAS 944898-18-4)
- 5-(4-(Trifluoromethyl)phenyl)-1,2,4-oxadiazole-3-carboxylic acid (CAS 652979-81-2)
- 2-(trifluoromethyl)-6,7-dihydro-9H-pyrano[4,3-e][1,2,4]triazolo[1,5-a]pyrimidin-9-one (CAS 1000932-55-7)
Recommended Standards
- 3-Bromoadamantane-1-carboxamide (CAS 53263-89-1)
- 4-((3-Bromobenzyl)amino)butan-1-ol (CAS 774190-66-8)
- 3-(4-Bromophenoxy)-N,N-dimethylpropan-1-amine (CAS 76579-64-1)
- 3-(3-Bromophenoxy)-N,N-dimethylpropan-1-amine (CAS 912569-57-4)
- 3-(3,4,5-Trimethoxyphenyl)propanoic Acid (CAS 25173-72-2)
- 5-[4-(aminomethyl)phenyl]-5-methylimidazolidine-2,4-dione hydrochloride (CAS 1803589-13-0)
- 5-(Bis(4-methoxybenzyl)amino)-6-methyl-1H-pyrrolo[3,2-b]pyridine-2-carboxylic acid (CAS 2891456-66-7)
- Methyl 2-(benzyloxy)-5-iodobenzoate (CAS 146335-26-4)
- (S)-Methyl 3-methyl-2-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylate (CAS 1956437-81-2)
- 2-[3-(4h-1,2,4-triazol-4-yl)phenoxy]acetic acid (CAS 847606-79-5)
- N-(benzo[d][1,3]dioxol-5-ylmethyl)-3-nitroaniline (CAS 191595-08-1)
- N-Cyclohexyl-2-((6-(furan-2-yl)pyridazin-3-yl)thio)acetamide (CAS 894005-55-1)
- Tetraethylammonium formate (CAS 38410-12-7)
- Semaglutide Impurity 151 xTFA (CAS CATO-C4X-2226151)
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