Vardenafil Impurity 15 CAS CATO-C4X-101715
| CAS No. | CATO-C4X-101715 |
| Molecular Formula | C18H22N4O5S |
| Molecular Weight | 406.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Vardenafil Impurity 15.
As a process- or degradation-related impurity, Vardenafil Impurity 15 (CAS CATO-C4X-101715, C18H22N4O5S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C18H22N4O5S, Vardenafil Impurity 15 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 406.46 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).
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.
As a certified reference material (CRM), Vardenafil Impurity 15 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 | C18H22N4O5S |
| Molecular Weight | 406.46 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Vardenafil Standards
- Vardenafil Impurity 53 (CAS CATO-C4X-101753)
- Vardenafil Impurity 60 (CAS CATO-C4X-101760)
- Vardenafil Impurity 56 (CAS CATO-C4X-101756)
- 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 EP Impurity B (CAS 437717-43-6)
Recommended Standards
- N-{4-[(3-{imidazo[1,2-a]pyridin-2-yl}phenyl)sulfamoyl]phenyl}acetamide (CAS 537021-04-8)
- 4,5-Dibromo-2-(2-(4-chlorophenyl)-2-oxoethyl)pyridazin-3(2H)-one (CAS 303987-66-8)
- Sildenafil Impurity 15 (CAS 2512206-40-3)
- 4,4',4''-(Methylsilanetriyl)tribenzoic acid (CAS 31825-52-2)
- Delafloxacin impurity 34 (CAS CATO-C4X-263734)
- Cilostazol impurity 11 (CAS 54197-64-7)
- Agomelatine Impurity 33 (CAS 1079774-32-5)
- 2-(Difluoromethyl)-4-hydroxy-5-(trifluoromethyl)pyridine-3-acetonitrile (CAS 1805412-27-4)
- {[(3,5-dimethyl-4-nitro-1H-pyrazol-1-yl)methyl]thio}acetic acid (CAS 1006957-05-6)
- Tetrahydrofuran-3,4-diamine (CAS 167822-03-9)
- 2-(4-Chloro-2-methylphenoxy)-3-methoxypropanoic acid (CAS 1505803-98-4)
- 2-(4-Isopropylphenyl)-4-methylpyrrolidine (CAS 603068-52-6)
- Homarine (CAS 445-30-7)
- [β-Asp]9-Semaglutide (CAS CATO-CPTD788605)
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