Etoricoxib Impurity 11 CAS 2901801-70-3
| CAS No. | 2901801-70-3 |
| Molecular Formula | C18H17N3O2S |
| Molecular Weight | 339.41 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.
As a process- or degradation-related impurity, Etoricoxib Impurity 11 (CAS 2901801-70-3, C18H17N3O2S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Etoricoxib Impurity 11 (C18H17N3O2S) is characterized by a steroid 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. 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 11 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 | C18H17N3O2S |
| Molecular Weight | 339.41 g/mol |
| Purity | >95% |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Etoricoxib Standards
- Etoricoxib Impurity 46 (CAS 2708988-48-9)
- Etoricoxib Impurity 52 (CAS CATO-C4X-108052)
- Etoricoxib Impurity 81 (CAS 2241145-66-2)
- Etoricoxib Impurity 84 (CAS CATO-C4X-108084)
- Etoricoxib Impurity 2 (CAS 316149-01-6)
- Etoricoxib Impurity 83 (CAS CATO-C4X-108083)
- Etoricoxib Impurity 9 (CAS 202409-31-2)
- Etoricoxib Impurity 25 (CAS CATO-C4X-108025)
Recommended Standards
- Tert-butyl 4,4-dimethoxy-3-((methylsulfonyl)oxy)piperidine-1-carboxylate (CAS 2097617-92-8)
- Amoxicillin EP Impurity E (CAS 1356020-01-3)
- Tazarotenic Acid Sulfoxide (CAS 603952-64-3)
- Amoxicillin EP Impurity E-1 (CAS CATO-C4X-114872)
- Baricitinib Impurity 18 (CAS 1153949-11-1)
- Brigatinib Impurity 2 (CAS 1259274-28-6)
- Rosuvastatin Impurity N1 (CAS 849470-61-7)
- 4-(2-Hydroxy-2-propyl)phenol (CAS 2948-47-2)
- 2,4-Dibromo-3-(difluoromethyl)-5-nitropyridine (CAS 1806806-54-1)
- 6-Chloro-5-methoxynicotinonitrile (CAS 1256835-79-6)
- 4-((4-Bromophenyl)thio)-N-ethyl-6-(trifluoromethyl)pyrimidin-2-amine (CAS 339010-88-7)
- (R)-tert-Butyl (4-methyl-1-oxopentan-2-yl)carbamate (CAS 116662-96-5)
- 2-(1-Ethoxyethyl)-4-ethylpyrimidine-5-carboxylic acid (CAS 1339094-68-6)
- [y-Glu3]-Semaglutide Impurity 135 (CAS CATO-C4X-2226135)
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