Etoricoxib Impurity 20 CAS CATO-C4X-108020
| CAS No. | CATO-C4X-108020 |
| Molecular Formula | C13H17NO3S2 |
| Molecular Weight | 299.41 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.
Etoricoxib Impurity 20 (CAS CATO-C4X-108020) is a certified pharmaceutical impurity reference standard with the molecular formula C13H17NO3S2 and a molecular weight of 299.41 g/mol.
Etoricoxib Impurity 20 (C13H17NO3S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO manufactures Etoricoxib Impurity 20 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 | C13H17NO3S2 |
| Molecular Weight | 299.41 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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 | 1 |
| Sulfur Atoms | 2 |
Related Etoricoxib Standards
- Etoricoxib impurity 67 (CAS 859824-65-0)
- Etoricoxib Impurity 23 (CAS 1810761-43-3)
- Etoricoxib Impurity 91 (CAS CATO-C4X-108091)
- Etoricoxib Impurity 18 (CAS 1027162-35-1)
- Etoricoxib Impurity 6 (CAS 221615-75-4)
- Etoricoxib Impurity 15 (CAS 307531-96-0)
- Etoricoxib Impurity 29 (CAS 1798110-01-6)
- Etoricoxib Impurity 38 (CAS CATO-C4X-108038)
Recommended Standards
- 213772-01-1 Butanoic acid, 4-[[(1,1-dimethylethoxy)carbonyl](phenylmethyl)amino]- (CAS 213772-01-1)
- trans-4-Cyanophenyl 4-pentylcyclohexanecarboxylate (CAS 62439-35-4)
- Fluoxetine Impurity 24 (CAS CATO-C4X-135224)
- tert-Butyl 4-(2-ethoxy-2-oxoethyl)-3,3-dimethylpiperidine-1-carboxylate (CAS 958026-96-5)
- Netupitant Impurity 9 HCl (CAS 290297-24-4)
- Fluralaner impurity 46 (CAS CATO-C4X-218046)
- Landiolol Nitroso Impurity 54 (CAS CATO-C4X-262154)
- 2-(3-Methylthiophen-2-yl)azetidine (CAS 777887-41-9)
- 4-((6-Methyl-3-oxo-5,6,7,8-tetrahydrocinnolin-2(3H)-yl)methyl)benzoic acid (CAS 1707594-26-0)
- 2-Aminoethyl 5-oxotetrahydrofuran-2-carboxylate (CAS 337311-38-3)
- 7-Nitrobenzofuran-3(2H)-one (CAS 164915-57-5)
- 1246814-68-5 6-Amino-5-nitroso-2-thiouracil-13C,15N (CAS 1246814-68-5)
- (2E)-3-Chloro-3-(2,4-dimethylphenyl)-2-methylacrylaldehyde (CAS 71245-75-5)
- Semaglutide Impurity 6 (CAS 62-57-7)
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