Gatifloxacin Impurity 19 CAS 1798008-43-1
| CAS No. | 1798008-43-1 |
| Molecular Formula | C19H22FN3O5 |
| Molecular Weight | 391.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Gatifloxacin Impurity 19 (CAS 1798008-43-1) is a certified pharmaceutical impurity reference standard with the molecular formula C19H22FN3O5 and a molecular weight of 391.39 g/mol.
Structurally, Gatifloxacin Impurity 19 (C19H22FN3O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 391.39 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Gatifloxacin 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 | C19H22FN3O5 |
| Molecular Weight | 391.39 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 sealed and dry |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Gatifloxacin Standards
- Gatifloxacin Impurity 10 (CAS 1335198-95-2)
- Gatifloxacin Impurity 13 (CAS 103460-87-3)
- Gatifloxacin Impurity C79 (CAS 182868-72-0)
- Gatifloxacin Impurity 14 (CAS 114213-69-3)
- Gatifloxacin Impurity 27 (CAS CATO-C4X-125327)
- Gatifloxacin-d4 (CAS 1190043-25-4)
- Gatifloxacin Impurity 35 (CAS 3104323-45-4)
- Gatifloxacin Impurity 17 (CAS 1048972-28-6)
Recommended Standards
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