Allisartan Isoproxil Impurity 22 CAS CATO-C4X-321722
| CAS No. | CATO-C4X-321722 |
| Molecular Formula | C33H24N4O |
| Molecular Weight | 492.57 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Allisartan Isoproxil Impurity 22 (CAS CATO-C4X-321722) is a certified pharmaceutical impurity reference standard with the molecular formula C33H24N4O and a molecular weight of 492.57 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Allisartan Isoproxil Impurity 22 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 492.57 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C33H24N4O |
| Molecular Weight | 492.57 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 95% |
| 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 |
| Nitrogen Atoms | 4 |
Related Allisartan Standards
- Allisartan Isoproxil Impurity 12 (CAS CATO-C4X-321712)
- Allisartan Isoproxil Impurity 35 (CAS CATO-C4X-321735)
- Allisartan Isoproxil Impurity 31 (CAS CATO-C4X-321731)
- Allisartan Isoproxil Impurity 32 (CAS CATO-C4X-321732)
- Allisartan Isoproxil Impurity 2 (CAS CATO-C4X-32172)
- Allisartan Isoproxil Impurity 37 (CAS 135077-32-6)
- Allisartan Isoproxil Impurity 27 (CAS 947331-07-9)
- Allisartan Isoproxil (CAS 947331-05-7)
Recommended Standards
- Revefenacin Impurity 46 (CAS CATO-C4X-203146)
- Tepotinib impurity 10 (CAS CATO-C4X-337410)
- Cefcapene Impurity 36 (CAS 1360188-88-0)
- Tepotinib (CAS 1100598-32-0)
- Varenicline Impurity 23 (CAS 1350219-74-7)
- Loratadine Impurity 7 (CAS 133330-61-7)
- Proparacaine Impurity 25 HCl (CAS 1081544-05-9)
- Bumetanide Impurity 55 (CAS CATO-C4X-198655)
- (5-Fluoro-2-(isopentyloxy)phenyl)(methyl)sulfane (CAS 1443311-14-5)
- 1-ethyl-5-methylpiperazin-2-one (CAS 1000577-11-6)
- DL-Homocysteine (CAS 454-29-5)
- 3-(2-Methoxypyridin-3-yl)-5-methylisoxazole-4-carboxylic acid (CAS 1370418-93-1)
- 6-Methoxy-2,3,4,9-tetrahydro-1h-carbazol-4-amine (CAS 1427380-33-3)
- Semaglutide Impurity 155 (x TFA Salt) (CAS CATO-C4X-2226155)
Why CATO?
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