Pazufloxacin Impurity 11 CAS 165071-10-3
| CAS No. | 165071-10-3 |
| Molecular Formula | C14H10FNO6 |
| Molecular Weight | 307.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Pazufloxacin Impurity 11 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 307.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Pazufloxacin Impurity 11 (CAS 165071-10-3) is a certified pharmaceutical impurity reference standard with the molecular formula C14H10FNO6 and a molecular weight of 307.23 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.
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 | C14H10FNO6 |
| Molecular Weight | 307.23 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >90% |
| 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; 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.) | 2004 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Pazufloxacin Standards
- Pazufloxacin Impurity 5 (CAS 176760-98-8)
- Pazufloxacin Impurity 15 (CAS CATO-C4X-233215)
- Pazufloxacin Impurity 24 (CAS CATO-C4X-233224)
- Pazufloxacin Impurity 14 (CAS CATO-C4X-233214)
- Pazufloxacin (CAS 127045-41-4)
- Pazufloxacin Impurity 20 (CAS 165071-03-4)
- Pazufloxacin Impurity 9 (CAS 171567-48-9)
- Pazufloxacin Impurity 10 (CAS 165071-09-0)
Recommended Standards
- Memantine impurity 57 (CAS CATO-C4X-105857)
- Apalutamide impurity 92 (CAS CATO-C4X-274992)
- 279228-81-8 3-amino-2-hydroxy-2-methyl-N-[4-nitro-3-(trifluoromethyl)phenyl]propanamide DTXSID70434297 (CAS 279228-81-8)
- 4-Fluoro-3-[(trifluoromethyl)sulfonyl]benzenesulfonamide (CAS 1027345-08-9)
- Clevidipine Impurity 31 (CAS 1207068-16-3)
- Doxepin Impurity 1 (CAS CATO-C4X-12261)
- Pomalidomide Impurity 35 HCl (CAS CATO-C4X-135435)
- 4-Acetyl-5-aminonicotinaldehyde (CAS 1393550-90-7)
- 4-Chloro-2-(4-chlorophenyl)-5-methylquinazoline (CAS 885277-78-1)
- N-{2-[4-(tert-Butyl)phenoxy]propyl}-2-isopropylaniline (CAS 1040682-13-0)
- Calcium thioglycolate trihydrate crystallized, ≥98.0% (RT) (CAS 65208-41-5)
- 3-Amino-5-(tert-butoxy)phenol (CAS 1243362-52-8)
- Methyl 2-methyl-3-[(pentan-3-yl)amino]propanoate (CAS 1154918-13-4)
- Ephrin-A2-Selective YSA-Peptide (CAS 532441-10-4)
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