Vardenafil Impurity 59 CAS CATO-C4X-101759
| CAS No. | CATO-C4X-101759 |
| 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 59 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.
Vardenafil Impurity 59 (CAS CATO-C4X-101759) is a certified pharmaceutical impurity reference standard with the molecular formula C22H30N4O4 and a molecular weight of 414.50 g/mol.
Vardenafil Impurity 59 (C22H30N4O4) contains a flavonoid 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. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
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 56 (CAS CATO-C4X-101756)
- 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
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- Agomelatine impurity 31 (CAS CATO-C4X-110831)
- N-(5-Acetyl-4-phenylthiazol-2-yl)-4-(ethylsulfonyl)benzamide (CAS 941959-67-7)
- N-Nitroso Vilanterol impurity 57 (CAS 3085658-79-0)
- Faropenem Impurity 76 (CAS CATO-C4X-128976)
- Atogepant Impurity 90 (CAS CATO-C4X-328590)
- 1,1'-(4-Methyl-1,3-phenylene)bis(3,3-dimethylurea) (CAS 17526-94-2)
- Paliperidone Impurity 62 (CAS 849727-62-4)
- 1-(2,4-Difluorobenzenesulfonyl)piperidine-4-carboxylic acid (CAS 848290-17-5)
- 3-(4-Amino-2-methoxyphenyl)-1,3-oxazolidin-2-one (CAS 31847-25-3)
- 2-Chloro-5-((piperidin-3-ylmethoxy)methyl)pyridine dihydrochloride (CAS 1185316-47-5)
- 2-{[(4-tert-butylphenyl)methyl]sulfanyl}-5-[2-(methylsulfanyl)phenyl]-1,3,4-oxadiazole (CAS 339015-43-9)
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