Allisartan Isoproxil Impurity 19 CAS CATO-C4X-321719
| CAS No. | CATO-C4X-321719 |
| Molecular Formula | C49H51N7O3 |
| Molecular Weight | 785.97 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Allisartan Isoproxil Impurity 19 (C49H51N7O3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Allisartan Isoproxil Impurity 19 (CAS CATO-C4X-321719) is a certified pharmaceutical impurity reference standard with the molecular formula C49H51N7O3 and a molecular weight of 785.97 g/mol.
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 certified reference material (CRM), Allisartan Isoproxil Impurity 19 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C49H51N7O3 |
| Molecular Weight | 785.97 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 28.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 7 |
Related Allisartan Standards
- Allisartan Isoproxil Impurity 33 (CAS CATO-C4X-321733)
- Allisartan Isoproxil Impurity 26 (CAS CATO-C4X-321726)
- Allisartan Isoproxil Impurity 14 (CAS CATO-C4X-321714)
- Allisartan Isoproxil Impurity 29 (CAS 947331-22-8)
- Allisartan Isoproxil Impurity 3 (CAS CATO-C4X-32173)
- Allisartan Isoproxil Impurity 23 (CAS CATO-C4X-321723)
- Allisartan Isoproxil Impurity 30 (CAS CATO-C4X-321730)
- Allisartan Isoproxil Impurity 25 (CAS CATO-C4X-321725)
Recommended Standards
- Leucomycin Hydrate (CAS 1392-21-8)
- CAS 129212-37-9 (CAS 129212-37-9)
- Josamycin EP Impurity H (KitasaMycin A1) (CAS 16846-34-7)
- Tacrolimus Impurity 3 (CAS CATO-C4X-13003)
- Betamethasone impurity 58 (CAS CATO-C4X-143758)
- Lenalidomide Impurity 69 (CAS CATO-C4X-190369)
- Pitavastatin Impurity 89 (CAS CATO-C4X-103789)
- 2-(Sec-butyl)-4,6-dichloro-5-methylpyrimidine (CAS 1341963-83-4)
- 3’,5’-Bis(trifluoromethyl)-2-hydroxyacetophenone (CAS 944277-15-0)
- Crisaborole lmpurity 75 (CAS CATO-C4X-202175)
- 3-(4-Aminophenyl)-N-ethylbenzamide (CAS 1345471-45-5)
- bicyclo[4.1.0]heptan-3-amine (CAS 78293-51-3)
- (6-Bromo-2-fluoropyridin-3-yl)methanol (CAS 1227563-78-1)
- Neuropeptide Y (18-36) (CAS 114495-97-5)
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