Vardenafil Impurity 56 CAS CATO-C4X-101756
| CAS No. | CATO-C4X-101756 |
| Molecular Formula | C22H30N4O4 |
| Molecular Weight | 414.50 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Vardenafil Impurity 56 is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Vardenafil Impurity 56 (CAS CATO-C4X-101756, C22H30N4O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C22H30N4O4, Vardenafil Impurity 56 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 414.50 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), Vardenafil Impurity 56 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 | C22H30N4O4 |
| Molecular Weight | 414.50 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Vardenafil Standards
- Vardenafil Impurity 59 (CAS CATO-C4X-101759)
- Vardenafil Impurity 29 (CAS 1009013-42-6)
- Vardenafil Impurity 54 (CAS 1810028-99-9)
- Vardenafil Impurity 14 (CAS CATO-C4X-101714)
- Vardenafil Impurity 15 (CAS CATO-C4X-101715)
- Vardenafil Impurity 53 (CAS CATO-C4X-101753)
- Vardenafil Impurity 57 (CAS CATO-C4X-101757)
- Vardenafil Impurity 60 (CAS CATO-C4X-101760)
Recommended Standards
- N,N'-(Cyclohexa-2,5-diene-1,4-diylidene)bis(4-methylbenzenesulfonamide) (CAS 50931-32-3)
- N-(5-Acetyl-4-phenylthiazol-2-yl)-4-(ethylsulfonyl)benzamide (CAS 941959-67-7)
- Ibrutinib Impurity 37 (CAS CATO-C4X-106437)
- N-(3-(5,7-Dimethylbenzo[d]oxazol-2-yl)-2-methylphenyl)-4-propoxybenzamide (CAS 590395-83-8)
- Timolol Impurity 14 (CAS 58827-68-2)
- Salbutamol Impurity 135 (CAS CATO-C4X-1176135)
- Pemetrexed Impurity 67 (CAS CATO-C4X-172667)
- Cilastatin Impurity 45 (CAS CATO-C4X-196045)
- 5-Amino-2-isopropoxyphenol (CAS 1236061-10-1)
- 8-Bromonaphtho[2,1-b]benzofuran (CAS 1846601-97-5)
- 4-Isothiocyanato-1-(4-methyl-benzyl)-1h-pyrazole (CAS 1004193-45-6)
- 5-Bromo-2H-pyran-2-one (CAS 19978-33-7)
- 6-((3,5-Dimethylphenyl)selanyl)-1-((2-hydroxyethoxy)methyl)-5-isopropylpyrimidine-2,4(1H,3H)-dione (CAS 172255-88-8)
- endo-Ser39-Tirzepatide (CAS CATO-CPTD788935)
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