Azilsartan Impurity 134 CAS 57113-88-9
| CAS No. | 57113-88-9 |
| Molecular Formula | C13H16N2O6 |
| Molecular Weight | 296.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Azilsartan Impurity 134 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.
As a process- or degradation-related impurity, Azilsartan Impurity 134 (CAS 57113-88-9, C13H16N2O6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Azilsartan Impurity 134 (C13H16N2O6) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 296.28 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C13H16N2O6 |
| Molecular Weight | 296.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 2 |
Related Azilsartan Standards
- Azilsartan Impurity 73 (CAS 57113-90-3)
- Azilsartan Impurity 62 (CAS CATO-C4X-109662)
- Azilsartan Impurity 56 (CAS 91526-16-8)
- Azilsartan Impurity 121 (CAS CATO-C4X-1096121)
- Azilsartan Impurity 23 (CAS 136285-65-9)
- Azilsartan Impurity 66 (CAS CATO-C4X-109666)
- Azilsartan Impurity 78 (CAS CATO-C4X-109678)
- Azilsartan Impurity 80 (CAS 136285-66-0)
Recommended Standards
- Erlotinib Impurity 32 (CAS 236750-65-5)
- 40958-11-0 Corynecin IV (CAS 40958-11-0)
- Olaparib Impurity 38 (CAS CATO-C4X-113538)
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- Olodaterol Impurity N6 (CAS 869478-10-4)
- Ubrogepant Impurity 12 (CAS CATO-C4X-340212)
- Diacerein EP Impurity F (CAS 13928-72-8 (racemic))
- Pyridazine-3,5-diamine (CAS 61071-13-4)
- Trans-5-isopropyl-5-(1-methoxyethyl)-2-phenyl-1,3-dioxane (CAS 22644-62-8)
- 2-Cyclohexyl-3-oxoisoindoline-4-carboxylic acid (CAS 626205-17-2)
- Carnitine Chloride Impurity 11 (CAS 94291-69-7)
- 4-(3,6-Dichloro-1,2,4-triazin-5-yl)-3-methylthiomorpholine (CAS 1538777-94-4)
- 1-(4-Bromophenyl)-2-(4-phenylpiperidin-1-yl)ethan-1-one (CAS 866150-85-8)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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