Fluconazole Impurity 19 CAS 1348664-75-4
| CAS No. | 1348664-75-4 |
| Molecular Formula | C13H13FN6O |
| Molecular Weight | 288.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a process- or degradation-related impurity, Fluconazole Impurity 19 (CAS 1348664-75-4, C13H13FN6O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Fluconazole Impurity 19 (C13H13FN6O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), Fluconazole Impurity 19 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 | C13H13FN6O |
| Molecular Weight | 288.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 6 |
Related Fluconazole Standards
- Fluconazole EP Impurity D (CAS 81886-51-3)
- Fluconazole Impurity 26 (CAS CATO-C4X-101926)
- Fluconazole Impurity 10 (CAS 163921-61-7)
- Fluconazole Impurity 8 (CAS 163921-62-8)
- Fluconazole EP Impurity A (CAS 89429-59-4)
- Fluconazole EP Impurity A (R-Isomer) (CAS CATO-C4X-101963)
- Fluconazole (CAS 86386-73-4)
- Fluconazole Impurity 37 (CAS CATO-C4X-101937)
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