Enzalutamide Impurity 42 CAS CATO-C4X-101642
| CAS No. | CATO-C4X-101642 |
| Molecular Formula | C21H18F4N4O4 |
| Molecular Weight | 466.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Enzalutamide Impurity 42 (CAS CATO-C4X-101642, C21H18F4N4O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Enzalutamide Impurity 42 (C21H18F4N4O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 466.39 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), Enzalutamide Impurity 42 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 | C21H18F4N4O4 |
| Molecular Weight | 466.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Enzalutamide Standards
- Enzalutamide Impurity 9 (CAS 1802242-43-8)
- Enzalutamide-d3 (CAS 1443331-82-5)
- Enzalutamide (CAS 915087-33-1)
- Enzalutamide Impurity 43 (CAS CATO-C4X-101643)
- Enzalutamide Impurity 8 (CAS CATO-C4X-10168)
- Enzalutamide-d6 (CAS 1443331-94-9)
- Enzalutamide Impurity 47 (CAS CATO-C4X-101647)
- Enzalutamide Impurity 49 (CAS CATO-C4X-101649)
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