Levofloxacin Impurity 59 CAS CATO-C4X-137159
| CAS No. | CATO-C4X-137159 |
| Molecular Formula | C16H17FN4O5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Levofloxacin Impurity 59 (C16H17FN4O5HCl) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Levofloxacin Impurity 59 (CAS CATO-C4X-137159) is a certified pharmaceutical impurity reference standard with the molecular formula C16H17FN4O5HCl and a molecular weight of 400.79 g/mol.
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.
As a certified reference material (CRM), Levofloxacin Impurity 59 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 | C16H17FN4O5 HCl |
| Molecular Weight | 400.79 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
Related Levofloxacin Standards
- Levofloxacin (CAS 100986-85-4)
- Levofloxacin R-Isomer（Levofloxacin EP Impurity A） (CAS 100986-86-5)
- Levofloxacin EP Impurity F (CAS 100986-89-8)
- Levofloxacin Impurity 35 (CAS 1012310-27-8)
- Levofloxacin Impurity 51 (CAS 1026952-91-9)
- Levofloxacin Impurity N27 (CAS 1036016-10-0)
- Levofloxacin Impurity 100 (CAS 104600-15-9)
- Levofloxacin Impurity 101 (CAS 105804-40-8)
Recommended Standards
- Leflunomide Impurity 19 (CAS 51135-73-0)
- N-Nitroso Vortioxetine Bromo Impurity 106 (CAS CATO-C4X-1056106)
- Gefitinib Impurity 19 (CAS 153437-78-6)
- 1,3-Dimethylpyrazole-4-methanamine (CAS 400756-28-7)
- 1-Cyclohexyl-3-(tert-butyldimethylsilyl)-2-propyn-1-ol (CAS 887586-33-6)
- tert-Butyl 4-(chloromethyl)-4-(hydroxymethyl)piperidine-1-carboxylate (CAS 1312131-45-5)
- Mexacarbate (CAS 315-18-4)
- 4-Chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-7H-pyrrolo[2,3-b]pyridine (CAS 1072145-24-4)
- (4-Bromophenyl)(2-(4-chlorophenyl)thiazol-5-yl)methanone (CAS 343376-21-6)
- Des-Gly29,30-Tirzepatide (CAS CATO-CPTD788944)
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