Parecoxib Impurity 56 CAS CATO-C4X-159156
| CAS No. | CATO-C4X-159156 |
| Molecular Formula | C16H15N3O5S2 |
| Molecular Weight | 393.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Parecoxib Impurity 56 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies Parecoxib Impurity 56 (CAS CATO-C4X-159156), a pharmacopoeial impurity reference standard (molecular formula C16H15N3O5S2, MW 393.44 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C16H15N3O5S2, Parecoxib Impurity 56 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 393.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | 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 57 (CAS CATO-C4X-159157)
- Parecoxib Impurity 58 (CAS CATO-C4X-159158)
- Parecoxib Impurity 26 (CAS CATO-C4X-159126)
Recommended Standards
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- Lemborexant Impurity 93 (CAS CATO-C4X-304293)
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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