Parecoxib Impurity 58 CAS CATO-C4X-159158
| CAS No. | CATO-C4X-159158 |
| Molecular Formula | C16H15N3O5S2 |
| Molecular Weight | 393.44 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.
As a process- or degradation-related impurity, Parecoxib Impurity 58 (CAS CATO-C4X-159158, C16H15N3O5S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Parecoxib Impurity 58 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 393.44 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 | C16H15N3O5S2 |
| Molecular Weight | 393.44 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Parecoxib Standards
- Parecoxib Impurity 42 (CAS CATO-C4X-159142)
- Parecoxib Impurity 43 (CAS 1373038-59-5)
- Parecoxib Impurity 53 (CAS CATO-C4X-159153)
- Parecoxib Impurity 54 (CAS CATO-C4X-159154)
- Parecoxib Impurity 55 (CAS CATO-C4X-159155)
- Parecoxib Impurity 56 (CAS CATO-C4X-159156)
- Parecoxib Impurity 57 (CAS CATO-C4X-159157)
- Parecoxib Impurity 26 (CAS CATO-C4X-159126)
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- Dequalinium Impurity 16 (CAS CATO-C4X-193616)
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