Telmisartan Impurity 64 CAS CATO-C4X-135964
| CAS No. | CATO-C4X-135964 |
| Molecular Formula | C24H28ClN4O4 |
| Molecular Weight | 471.96 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Telmisartan Impurity 64 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.
Telmisartan Impurity 64 (CAS CATO-C4X-135964) is a certified pharmaceutical impurity reference standard with the molecular formula C24H28ClN4O4 and a molecular weight of 471.96 g/mol.
Based on its molecular formula C24H28ClN4O4, Telmisartan Impurity 64 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 471.96 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C24H28ClN4O4 |
| Molecular Weight | 471.96 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Telmisartan Standards
- Telmisartan Impurity 41 (CAS 1004548-55-3)
- Telmisartan Impurity 102 (CAS CATO-C4X-1359102)
- Telmisartan Impurity 25 (CAS CATO-C4X-135925)
- Telmisartan Impurity 101 (CAS 1338830-39-9)
- Telmisartan EP Impurity G (CAS 144702-27-2)
- Telmisartan Impurity 83 (CAS CATO-C4X-135983)
- Telmisartan Impurity 24 (CAS 144701-81-5)
- Telmisartan Impurity 26 (CAS CATO-C4X-135926)
Recommended Standards
- Ticagrelor Impurity 79 (CAS CATO-C4X-109379)
- CLAMIKALANT (CAS 158751-64-5)
- 3-Chloro-N-cyclohexyl-N-(2-((3-nitrophenyl)amino)-2-oxoethyl)benzo[b]thiophene-2-carboxamide (CAS 332156-22-6)
- (E)-1-benzyl-2-((4-chlorobenzylidene)amino)-4,5-diphenyl-1H-pyrrole-3-carbonitrile (CAS 477887-19-7)
- Lenacapavir Impurity 5 (CAS CATO-C4X-32485)
- Tiotropium impurity 46 (CAS 7688-76-8)
- Sofosbuvir Impurity 18 (CAS CATO-C4X-105218)
- 5,7-Di-tert-butyl-3-(4-(trifluoromethoxy)phenyl)benzo[d]oxazol-3-ium tetrafluoroborate (CAS 2750161-90-9)
- Piperidolate (CAS 82-98-4)
- 3-Ethyl-4-methylpiperidine (CAS 39191-01-0)
- Ethyl 1,3-diphenylpyrrolo[2,1-a]isoquinoline-2-carboxylate (CAS 20958-80-9)
- 3,5-Difluoro-N-(2-methylbutyl)aniline (CAS 1040006-11-8)
- 3-Ethyl-2-methyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4(3H)-one (CAS 1505094-40-5)
- Semaglutide impurity 199 (CAS CATO-C4X-2226199)
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