Levofloxacin Impurity 26 CAS 106939-34-8
| CAS No. | 106939-34-8 |
| Molecular Formula | C15H13F2NO4 |
| Molecular Weight | 309.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Levofloxacin Impurity 26 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.
As a process- or degradation-related impurity, Levofloxacin Impurity 26 (CAS 106939-34-8, C15H13F2NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C15H13F2NO4, Levofloxacin Impurity 26 contains a flavonoid core, 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 309.26 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.
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.
Physical & Chemical Properties
| Molecular Formula | C15H13F2NO4 |
| Molecular Weight | 309.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Levofloxacin Standards
- Levofloxacin Impurity 47 (CAS 110548-06-6)
- Levofloxacin impurity 74 (CAS CATO-C4X-137174)
- Levofloxacin Impurity 64 (CAS 1607796-83-7)
- Levofloxacin impurity 69 (CAS CATO-C4X-137169)
- Levofloxacin Impurity 17 (CAS CATO-C4X-137117)
- Levofloxacin impurity 66 (CAS CATO-C4X-137166)
- Levofloxacin Descarboxy Impurity（Levofloxacin EP Impurity E） (CAS 178964-53-9)
- Levofloxacin Impurity 100 (CAS 104600-15-9)
Recommended Standards
- Moxifloxacin Impurity 46 (CAS 141290-02-0)
- Moxifloxacin Impruty 26 (CAS 452092-31-8)
- 2-Hydroxy-1-methoxy-4-oxo-4,5-dihydrodibenzo[cd,f]indole-3-carboxylic acid (CAS 106283-33-4)
- Moxifloxacin Impurity 25 (CAS 143158-55-8)
- Tiotropium Bromide Impurity 18 (CAS 51-56-9)
- Dorzolamide Impurity 22 (CAS 147128-79-8)
- Pemirolast Impurity 3 (CAS CATO-C4X-24703)
- 1,4,5,6-Tetrahydropyridine-2-carboxylic acid (CAS 99839-26-6)
- 4-{[2-(4-chlorophenyl)imidazo[1,2-a]pyridin-3-yl]methyl}morpholine (CAS 861208-74-4)
- 3-(Trifluoromethyl)-1,4,5,7-tetrahydropyrano[3,4-c]pyrazole (CAS 1022931-48-1)
- Adefovir Dipivoxil (CAS 142340-99-6)
- 3-(4-Chlorophenyl)-7-hydroxy-2-methyl-4H-chromen-4-one (CAS 314243-91-9)
- 1-(2,3-Dimethylphenyl)-2,3-dihydroquinazoline-4(1H)-thione (CAS 90070-92-1)
- 3AEEA-Semaglutide(Endo-AEEA-Semaglutide) (CAS CATO-C4X-2226265)
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