Parecoxib Impurity 37 CAS CATO-C4X-159137
| CAS No. | CATO-C4X-159137 |
| Molecular Formula | C20H23N3O5S2 |
| Molecular Weight | 449.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Parecoxib Impurity 37 (C20H23N3O5S2) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a process- or degradation-related impurity, Parecoxib Impurity 37 (CAS CATO-C4X-159137, C20H23N3O5S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 manufactures Parecoxib Impurity 37 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.
Physical & Chemical Properties
| Molecular Formula | C20H23N3O5S2 |
| Molecular Weight | 449.54 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Parecoxib Standards
- Parecoxib Impurity 74 (CAS CATO-C4X-159174)
- Parecoxib Impurity 35 (CAS 1373038-63-1)
- Parecoxib Impurity 60 (CAS CATO-C4X-159160)
- Parecoxib Impurity 77 (CAS CATO-C4X-159177)
- Parecoxib Impurity 26 (CAS CATO-C4X-159126)
- Parecoxib sodium Impurity 11 (CAS 1708094-99-8)
- Parecoxib Impurity 27 (CAS CATO-C4X-159127)
- Parecoxib Impurity 38 (CAS CATO-C4X-159138)
Recommended Standards
- Gentamicin C1a (CAS 26098-04-4)
- 2-(2H-1,3-Benzodioxole-5-carbonyl)-6-methyl-4-(thiophen-2-yl)-5H,6H,7H,8H-thieno[2,3-b]1,6-naphthyridin-3-amine (CAS 354555-88-7)
- N,N-Bis(2,4-dimethoxybenzyl)-5,6,7,8-tetrahydro-1,7-naphthyridin-2-amine (CAS 2891456-70-3)
- 3,5-Di([1,1'-biphenyl]-4-yl)-4-phenyl-4H-1,2,4-triazole (CAS 387391-50-6)
- Nimodipine Impurity 60 (CAS CATO-C4X-138560)
- Amodiaquine Impurity 2 (CAS 79049-30-2)
- Allopurinol EP Impurity D (CAS 19750-02-8)
- N-(1-(dimethylamino)propyl)dodecanamide (CAS 3179-80-4)
- 2-((6-Methoxybenzo[d]thiazol-2-yl)amino)phenol (CAS 1951440-86-0)
- Fluocinolone Acetonide Impurity 42 (CAS 3793-12-2)
- Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, 1,1′-(1,4-phenylenedi-2,1-ethanediyl) 4,4′-diethyl ester (CAS 1402918-72-2)
- 5-(2-Chlorophenyl)-N-(3-(cyclopropylcarbamoyl)phenyl)furan-2-carboxamide (CAS 878585-83-2)
- 1,1-Di-(4-Methoxyphenyl)-1-[4-(1H,1H,2H,2H-Perfluorodecyl)Phenyl]Methanol (CAS 865758-47-0)
- Tripeptide-10 citrulline (CAS 960531-53-7)
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