Piribedil Impurity 19 CAS CATO-C4X-281319
| CAS No. | CATO-C4X-281319 |
| Molecular Formula | C24H24N4O4 |
| Molecular Weight | 432.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Piribedil Impurity 19 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, Piribedil Impurity 19 (CAS CATO-C4X-281319, C24H24N4O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Piribedil Impurity 19 (C24H24N4O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 432.47 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C24H24N4O4 |
| Molecular Weight | 432.47 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Piribedil Standards
- Piribedil Impurity 5 (CAS CATO-C4X-28135)
- Piribedil Impurity N4 (CAS 55436-41-4)
- Piribedil Impurity 22 (CAS CATO-C4X-281322)
- Piribedil Impurity 23 (CAS CATO-C4X-281323)
- Piribedil N-Oxide (CAS 53954-71-5)
- Piribedil Impurity 11 (CAS CATO-C4X-281311)
- Piribedil-d8 (CAS 1398044-45-5)
- Piribedil Impurity 5 (CAS CATO-C4X-28137)
Recommended Standards
- Sulbenicillin Impurity 1 (CAS CATO-C4X-23241)
- Finerenone Impurity 109 (CAS CATO-C4X-2880109)
- Gadobutrol Impurity 182 (CAS CATO-C4X-2120182)
- Finerenone Impurity 127 (CAS CATO-C4X-2880127)
- Daclatasvir Impurity 15 (CAS CATO-C4X-184815)
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