Sparfloxacin Impurity 4 CAS CATO-C4X-21134
| CAS No. | CATO-C4X-21134 |
| Molecular Formula | C13H11F2N3O3 |
| Molecular Weight | 295.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Sparfloxacin Impurity 4 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, Sparfloxacin Impurity 4 (CAS CATO-C4X-21134, C13H11F2N3O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Sparfloxacin Impurity 4 (C13H11F2N3O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine 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 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).
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 | C13H11F2N3O3 |
| Molecular Weight | 295.24 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, 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; 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-containing |
| Nitrogen Atoms | 3 |
Related Sparfloxacin Standards
Recommended Standards
- Ofloxacin Impurity 8 (CAS CATO-C4X-17178)
- 6-(Furan-3-yl)-2-((2S,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-1,2,4-triazine-3,5(2H,4H)-dione (CAS 100244-31-3)
- Darunavir Impurity 27 (CAS 192725-55-6)
- Methyl (2,4-dinitrophenyl)-L-prolinate (CAS 10420-70-9)
- Tranexamic Impurity 19 (CAS 5278-91-1)
- Pelubiprofen Impurity N1 (CAS 63476-54-0)
- Cefalexin Impurity 49 (CAS CATO-C4X-126149)
- 2-Aminopyrimidine-5-carbaldehyde (CAS 120747-84-4)
- 2-Bromo-N,4-dimethylaniline (CAS 81090-31-5)
- 2-Methyl-8-nitroindolizine (CAS 60891-78-3)
- 16-Ethyl-6,8,9-trihydroxy-12-(methoxymethyl)-25,27-dimethyl-2-propyl-1-oxa-4-azacyclooctacosane-3,20,28-trione (CAS 178694-47-8)
- 6-Nitro-3,4-dihydropyrrolo[1,2-a]pyrazin-1(2H)-one (CAS 54906-41-1)
- Tributyl[4-(2-butyloctyl)-2-thienyl]stannane (CAS 1638802-06-8)
- Myosin Kinase Inhibiting Peptide (CAS 119386-39-9)
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