Pranoprofen Impurity 78 CAS CATO-C4X-181178
| CAS No. | CATO-C4X-181178 |
| Molecular Formula | C25H31NO3 |
| Molecular Weight | 393.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Pranoprofen Impurity 78 (CAS CATO-C4X-181178, C25H31NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Pranoprofen Impurity 78 (C25H31NO3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), Pranoprofen Impurity 78 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 | C25H31NO3 |
| Molecular Weight | 393.52 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Pranoprofen Standards
- Pranoprofen Impurity 27 (CAS CATO-C4X-181127)
- Pranoprofen Impurity 39 (CAS CATO-C4X-181139)
- Pranoprofen Impurity 56 (CAS CATO-C4X-181156)
- Pranoprofen Impurity 4 (CAS CATO-C4X-18114)
- Pranoprofen Impurity 72 (CAS CATO-C4X-181172)
- Pranoprofen Impurity 73 (CAS CATO-C4X-181173)
- Pranoprofen Impurity 23 (CAS CATO-C4X-181123)
- Pranoprofen Impurity 20 (CAS CATO-C4X-181120)
Recommended Standards
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