Epinastine Impurity 9 CAS 141342-71-4
| CAS No. | 141342-71-4 |
| Molecular Formula | C15H15N3O2 |
| Molecular Weight | 269.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Epinastine Impurity 9 (C15H15N3O2) contains a nitrogen-containing heterocyclic scaffold, 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 supplies Epinastine Impurity 9 (CAS 141342-71-4), a pharmacopoeial impurity reference standard (molecular formula C15H15N3O2, MW 269.30 g/mol) used for the identification and quantification of trace impurities in APIs.
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 Epinastine Impurity 9 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 | C15H15N3O2 |
| Molecular Weight | 269.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 3 |
Related Epinastine Standards
- Epinastine Impurity 41 (CAS CATO-C4X-184041)
- Epinastine Impurity 27 (CAS CATO-C4X-184027)
- Epinastine Impurity 45 (CAS CATO-C4X-184045)
- Epinastine Impurity 17 (CAS 23207-75-2)
- Epinastine Impurity 12 (CAS 745761-19-7)
- Epinastine Impurity 20 (CAS CATO-C4X-184020)
- Epinastine Impurity 46 (CAS CATO-C4X-184046)
- Epinastine Impurity N7 (CAS 21535-43-3)
Recommended Standards
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- Tolvaptan Impurity 28 (CAS 317374-08-6)
- Elagolix Impurity 117 (CAS CATO-C4X-2068117)
- Cimetidine impurity 28 (CAS 95010-84-7)
- Pretomanid Impurity 30 (CAS 2923894-84-0)
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- Fmoc-NH-PEG25-CH2CH2COOH (CAS 1257223-69-0)
- (3-Chlorophenyl)(3,4-difluorophenyl)methanone (CAS 844884-94-2)
- Autocamtide-2-Related Inhibitory Peptide TFA (CAS 167114-91-2（free base）)
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