Nemonoxacin Impurity 45 CAS CATO-C4X-312845
| CAS No. | CATO-C4X-312845 |
| Molecular Formula | C14H14N2O4 |
| Molecular Weight | 274.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Nemonoxacin Impurity 45 (CAS CATO-C4X-312845, C14H14N2O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Nemonoxacin Impurity 45 (C14H14N2O4) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C14H14N2O4 |
| Molecular Weight | 274.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | ≥95% |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Nemonoxacin Standards
- Nemonoxacin Impurity 80 (CAS CATO-C4X-312880)
- Nemonoxacin Impurity 53 (CAS CATO-C4X-312853)
- Nemonoxacin Impurity 54 (CAS 269407-02-5)
- Nemonoxacin Impurity 101 (CAS CATO-C4X-3128101)
- Nemonoxacin Impurity 27 (CAS 926279-65-4)
- Nemonoxacin Impurity 41 (CAS CATO-C4X-312841)
- Nemonoxacin Impurity 43 (CAS CATO-C4X-312843)
- Nemonoxacin Impurity 69 (CAS CATO-C4X-312869)
Recommended Standards
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- (s)-1-Methyl-3-(piperidin-3-yl)-1,3-dihydro-2h-benzo[d]imidazol-2-one hydrochloride (CAS 2680615-69-2)
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- C-Peptide 2 (rat) (CAS 41594-08-5)
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