Allisartan Isoproxil Impurity 16 CAS 439904-79-7
| CAS No. | 439904-79-7 |
| Molecular Formula | C38H35N5O |
| Molecular Weight | 577.72 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, Allisartan Isoproxil Impurity 16 (CAS 439904-79-7, C38H35N5O) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Allisartan Isoproxil Impurity 16 (C38H35N5O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; 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 Allisartan Isoproxil Impurity 16 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 | C38H35N5O |
| Molecular Weight | 577.72 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 24.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 5 |
Related Allisartan Standards
- Allisartan Isoproxil (CAS 947331-05-7)
- Allisartan Isoproxil Impurity 5 (CAS CATO-C4X-32175)
- Allisartan Isoproxil Impurity 27 (CAS 947331-07-9)
- Allisartan Isoproxil Impurity 37 (CAS 135077-32-6)
- Allisartan Isoproxil Impurity 4 (CAS CATO-C4X-32174)
- Allisartan Isoproxil Impurity 15 (CAS 905456-95-3)
- Allisartan Isoproxil Impurity 12 (CAS CATO-C4X-321712)
- 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