6-Fluoro-7-nitroquinoxaline CAS 113269-08-2
| CAS No. | 113269-08-2 |
| Molecular Formula | C8H4FN3O2 |
| Molecular Weight | 193.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6-Fluoro-7-nitroquinoxaline (CAS 113269-08-2) is a high-purity analytical reference standard with the molecular formula C8H4FN3O2 and a molecular weight of 193.13 g/mol.
Based on its molecular formula C8H4FN3O2, 6-Fluoro-7-nitroquinoxaline contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 193.13 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H4FN3O2 |
| Molecular Weight | 193.13 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
- 1-Bromo-2-ethylhexane (CAS 18908-66-2)
- 1-Methyl-3-(trifluoromethyl)-1H-pyrazole-5-carboxamide (CAS 1245771-97-4)
- Riluzole Impurity 28 (CAS 861204-44-6)
- 1-Methyl-5-(trifluoromethyl)-1H-pyrazole-3-carboxamide (CAS 1245772-95-5)
- 3-(4-(2,7-Dimethylimidazo[1,2-a]pyridin-3-yl)thiazol-2-yl)aniline (CAS 1416338-86-7)
- 3-(Acetylamino)thieno[2,3-b]-pyridine-2-carboxylic acid (CAS 58327-94-9)
- 6-Bromo-8-fluoro-3,4-dihydroquinolin-2(1H)-one, 97% (CAS 1194459-25-0)
- Butalbital Impurity 6 (CAS 59726-40-8)
- 1-(2-Methoxy-5-methylpyridin-3-yl)ethanone (CAS 1203499-64-2)
- 3-(Hydroxymethyl)-5-(methylthio)-1,3,4-thiadiazole-2(3H)-thione (CAS 90567-39-8)
- 2-[(2-Chloro-1,1,2-Trifluoroethyl)Thio]Aniline (CAS 81029-02-9)
- 4-(5-Oxo-3-phenyl-4,5-dihydro-1h-pyrazol-1-yl)benzonitrile (CAS 118049-54-0)
- Axitinib Impurity 3 (CAS 885126-40-9)
- Peptide Impurity 15 (CAS 1227750-69-7)
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