Finasteride Impurity 15 CAS 140375-21-9
| CAS No. | 140375-21-9 |
| Molecular Formula | C23H36N2O2 |
| Molecular Weight | 372.54 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, Finasteride Impurity 15 (CAS 140375-21-9, C23H36N2O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Finasteride Impurity 15 (C23H36N2O2) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Finasteride 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 | C23H36N2O2 |
| Molecular Weight | 372.54 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 2 |
Related Finasteride Standards
- Finasteride (CAS 98319-26-7)
- Finasteride Impurity 11 (CAS CATO-C4X-164511)
- Finasteride Impurity 19 (CAS 166896-74-8)
- 5-Beta-Finasteride (CAS 140375-22-0)
- Finasteride Impurity 55 (CAS CATO-C4X-164555)
- Finasteride Impurity 13 (CAS CATO-C4X-164513)
- Finasteride Impurity 18 (CAS 131267-80-6)
- Finasteride Impurity 27 (CAS 1329611-51-9)
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