4,5,6,7-Tetrafluoroindoline CAS 19282-55-4
| CAS No. | 19282-55-4 |
| Molecular Formula | C8H5F4N |
| Molecular Weight | 191.13 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.
4,5,6,7-Tetrafluoroindoline (CAS 19282-55-4), molecular formula C8H5F4N and molecular weight 191.13 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H5F4N, 4,5,6,7-Tetrafluoroindoline 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 191.13 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C8H5F4N |
| Molecular Weight | 191.13 g/mol |
| Appearance | Off-white to pale 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- 2-(Difluoromethyl)-3,6-dihydroxypyridine-4-methanol (CAS 1806892-37-4)
- 4,5,6,7-Tetrafluoroisoindoline (CAS 55164-86-8)
- 4-(Difluoromethyl)-2-methoxypyridine-3,5-diol (CAS 1806801-34-2)
- Phenanthrene-[U 13C] (CAS 1173018-81-9)
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- Semaglutide impurity 95 (CAS CATO-C4X-222695)
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