Celecoxib Impurity 26 (Mixture of Z and E Isomers) CAS CATO-C4X-104326
| CAS No. | CATO-C4X-104326 |
| Molecular Formula | C17H15F3N2O3S |
| Molecular Weight | 384.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Celecoxib Impurity 26 (Mixture of Z and E Isomers) 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 Celecoxib Impurity 26 (Mixture of Z and E Isomers) (CAS CATO-C4X-104326), a pharmacopoeial impurity reference standard (molecular formula C17H15F3N2O3S, MW 384.37 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution, Celecoxib Impurity 26 (Mixture of Z and E Isomers) is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 384.37 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C17H15F3N2O3S |
| Molecular Weight | 384.37 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Celecoxib Standards
Recommended Standards
- N-(6-((2-Oxo-2-((4-(trifluoromethyl)phenyl)amino)ethyl)thio)pyridazin-3-yl)propionamide (CAS 1021091-78-0)
- n-(3,4-Difluorophenyl)-4-fluoro-3-(pyrrolidin-1-ylsulfonyl)benzamide (CAS 422554-93-6)
- (2S,3R,4S,5R,6R)-2-(((2R,3S,4R,5R,6R)-4,5-dihydroxy-2-(hydroxymethyl)-6-propoxytetrahydro-2H-pyran-3-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (CAS 115075-17-7)
- N-(3,4-Difluorophenyl)-1-(4-fluorobenzenesulfonyl)pyrrolidine-2-carboxamide (CAS 317377-88-1)
- Landiolol Impurity 142 (CAS CATO-C4X-2621142)
- Papaverine impurity 22 (CAS CATO-C4X-206722)
- Terbinafine EP Impurity D HCl (CAS 877265-33-3)
- 2-Chloro-8-Methylimidazo[1,2-a]pyridine (CAS 1019020-57-5)
- 4-Ethyl-1,4-dimethylpyrazolidine-3,5-dione (CAS 53445-99-1)
- Vitamin Impurity 33 (CAS 6381-77-7)
- sodium 1H-1,2,4-triazol-1-ylacetate (CAS 583858-39-3)
- 5-Bromo-N-propylthiophene-2-carboxamide (CAS 908494-85-9)
- 2-(Bromomethyl)-4-(difluoromethyl)-5-hydroxypyridine-3-acetic acid (CAS 1805997-39-0)
- Tirzepatide Impurity 58 (CAS CATO-C4X-324058)
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