Esomeprazole Impurity 85 CAS CATO-C4X-111285
| CAS No. | CATO-C4X-111285 |
| Molecular Formula | C11H15NO4 |
| Molecular Weight | 225.24 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.
CATO supplies Esomeprazole Impurity 85 (CAS CATO-C4X-111285), a pharmacopoeial impurity reference standard (molecular formula C11H15NO4, MW 225.24 g/mol) used for the identification and quantification of trace impurities in APIs.
Esomeprazole Impurity 85 (C11H15NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures Esomeprazole Impurity 85 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 | C11H15NO4 |
| Molecular Weight | 225.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Esomeprazole Standards
- Esomeprazole Impurity 83 (CAS 142885-95-8)
- Esomeprazole impurity 135 (CAS CATO-C4X-1112135)
- Esomeprazole Impurity 22 (CAS 1422064-00-3)
- Esomeprazole impurity 134 (CAS CATO-C4X-1112134)
- Esomeprazole Impurity 110 (CAS 91219-90-8)
- Esomeprazole Impurity 02 (CAS 53065-28-4)
- Esomeprazole impurity 01 (CAS 1525433-40-2)
- Esomeprazole Impurity 27 (CAS 848694-10-0)
Recommended Standards
- Diclofenac Impurity 40 (CAS CATO-C4X-105140)
- Rabeprazole Impurity 29 (CAS 1163685-31-1)
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- Pioglitazone Impurity 15 (CAS 291536-42-0)
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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