Tunodafil Impurity 13 CAS CATO-C4X-311013
| CAS No. | CATO-C4X-311013 |
| Molecular Formula | C23H34N4O4S |
| Molecular Weight | 462.61 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 462.61 g/mol gives Tunodafil Impurity 13 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Tunodafil Impurity 13 (CAS CATO-C4X-311013, C23H34N4O4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Tunodafil Impurity 13 (C23H34N4O4S) is characterized by a flavonoid core, an amide group, a sulfone 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 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.
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 | C23H34N4O4S |
| Molecular Weight | 462.61 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Tunodafil Standards
- Tunodafil Impurity 1 (CAS CATO-C4X-31101)
- Tunodafil Impurity 2 (CAS CATO-C4X-31102)
- Tunodafil Impurity 10 (CAS CATO-C4X-311010)
- Tunodafil Impurity 5 (CAS CATO-C4X-31105)
- Tunodafil Impurity 3 (CAS CATO-C4X-31103)
- Tunodafil Impurity 11 (CAS CATO-C4X-311011)
- Tunodafil Impurity 6 (CAS CATO-C4X-31106)
- Tunodafil Impurity 7 (CAS CATO-C4X-31107)
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