Tosufloxacin Impurity 3 CAS CATO-C4X-19763
| CAS No. | CATO-C4X-19763 |
| Molecular Formula | C21H17F3N4O4 |
| Molecular Weight | 446.38 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 446.38 g/mol gives Tosufloxacin Impurity 3 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Tosufloxacin Impurity 3 (CAS CATO-C4X-19763, C21H17F3N4O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Tosufloxacin Impurity 3 (C21H17F3N4O4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Tosufloxacin Impurity 3 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 | C21H17F3N4O4 |
| Molecular Weight | 446.38 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Tosufloxacin Standards
- Tosufloxacin impurity 6 (CAS CATO-C4X-19766)
- Tosufloxacin-D4 (CAS CATO-CCAD304671)
- Tosufloxacin Impurity 8 (CAS CATO-C4X-19768)
- Tosufloxacin (CAS 100490-36-6)
- Tosufloxacin Impurity 2 (CAS CATO-C4X-19762)
- Tosufloxacin Impurity 2 (CAS 100491-29-0)
- Tosufloxacin impurity 5 (CAS CATO-C4X-19765)
- Tosufloxacin Impurity 64 (CAS CATO-C4X-19764)
Recommended Standards
- Sorafenib Impurity 38 (CAS 862875-16-9)
- 1,1'-Bis(4-(trifluoromethyl)phenyl)-[4,4'-bipyridine]-1,1'-diium (CAS 2639670-64-5)
- 4-{[(4-bromophenyl)sulfanyl]methyl}-1-[(4-methylphenyl)sulfanyl]-2-nitrobenzene (CAS 477869-74-2)
- 3-((4-((3,4-Dichlorobenzyl)thio)phenyl)amino)-1-(4-methoxyphenyl)propan-1-one (CAS 763126-14-3)
- Empagliflozin Impurity N37 (CAS 2452301-33-4)
- Tofacitinib Impurity 60 (CAS 90213-66-4)
- Amoxicillin EP Impurity J(Mixture) (CAS 73590-06-4)
- L-Sepiapterin (CAS 17094-01-8)
- Testosterone Impurity 68 (CAS CATO-C4X-243268)
- Methyl 3-methyl-1-phenyl-1H-pyrazole-5-carboxylate (CAS 55115-11-2)
- 3-(3-methylphenoxy)propanenitrile (CAS 25268-06-8)
- thiazol-4-ylhydrazine (CAS 1871713-90-4)
- Fondaparinux sodium impurity 2 (CAS CATO-C4X-20522)
- SV40 Nuclear Transport Signal Peptide Analog (CAS 104914-40-1)
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