Azilsartan Impurity 126 CAS 1604812-36-3
| CAS No. | 1604812-36-3 |
| Molecular Formula | C28H26N4O5 |
| Molecular Weight | 498.53 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Azilsartan Impurity 126 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.
CATO supplies Azilsartan Impurity 126 (CAS 1604812-36-3), a pharmacopoeial impurity reference standard (molecular formula C28H26N4O5, MW 498.53 g/mol) used for the identification and quantification of trace impurities in APIs.
Azilsartan Impurity 126 (C28H26N4O5) contains a steroid 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. 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.
Physical & Chemical Properties
| Molecular Formula | C28H26N4O5 |
| Molecular Weight | 498.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 4 |
Related Azilsartan Standards
- Azilsartan Impurity 182 (CAS CATO-C4X-1096182)
- Azilsartan Impurity 34 (CAS CATO-C4X-109634)
- Azilsartan Impurity 97 (CAS CATO-C4X-109697)
- Azilsartan Impurity 93 (CAS 1800532-35-7)
- Azilsartan Impurity 68 (CAS CATO-C4X-109668)
- Azilsartan Impurity 43 (CAS 1514933-24-4)
- Azilsartan Impurity 95 (CAS CATO-C4X-109695)
- Azilsartan Impurity 122 (CAS CATO-C4X-1096122)
Recommended Standards
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Why CATO?
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