Allisartan Isoproxil Impurity 24 CAS CATO-C4X-321724
| CAS No. | CATO-C4X-321724 |
| Molecular Formula | C19H18N4O5 |
| Molecular Weight | 382.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Allisartan Isoproxil Impurity 24 (C19H18N4O5) contains a flavonoid core, 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. 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 supplies Allisartan Isoproxil Impurity 24 (CAS CATO-C4X-321724), a pharmacopoeial impurity reference standard (molecular formula C19H18N4O5, MW 382.37 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C19H18N4O5 |
| Molecular Weight | 382.37 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Allisartan Standards
- Allisartan Isoproxil Impurity 1 (CAS CATO-C4X-32171)
- Allisartan Isoproxil Impurity 13 (CAS CATO-C4X-321713)
- Allisartan Isoproxil Impurity 6 (CAS CATO-C4X-32176)
- Allisartan Isoproxil Impurity 2 (CAS CATO-C4X-32172)
- Allisartan Isoproxil Impurity 32 (CAS CATO-C4X-321732)
- Allisartan Isoproxil Impurity 31 (CAS CATO-C4X-321731)
- Allisartan Isoproxil Impurity 35 (CAS CATO-C4X-321735)
- Allisartan Isoproxil Impurity 22 (CAS CATO-C4X-321722)
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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