Tunodafil Impurity 7 CAS CATO-C4X-31107
| CAS No. | CATO-C4X-31107 |
| Molecular Formula | C15H22N2O5S |
| Molecular Weight | 342.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Tunodafil Impurity 7 (CAS CATO-C4X-31107), a pharmacopoeial impurity reference standard (molecular formula C15H22N2O5S, MW 342.41 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Tunodafil Impurity 7 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 342.41 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).
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 | C15H22N2O5S |
| Molecular Weight | 342.41 g/mol |
| Purity | 97%+ |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Tunodafil Standards
- Tunodafil Impurity 8 (CAS CATO-C4X-31108)
- Tunodafil Impurity 9 (CAS CATO-C4X-31109)
- Tunodafil Impurity 1 (CAS CATO-C4X-31101)
- Tunodafil Impurity 2 (CAS CATO-C4X-31102)
- Tunodafil Impurity 13 (CAS CATO-C4X-311013)
- Tunodafil Impurity 10 (CAS CATO-C4X-311010)
- Tunodafil Impurity 5 (CAS CATO-C4X-31105)
- Tunodafil Impurity 3 (CAS CATO-C4X-31103)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com