Finasteride Impurity 14 CAS 302-97-6
| CAS No. | 302-97-6 |
| Molecular Formula | C20H28O3 |
| Molecular Weight | 316.43 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 14 (CAS 302-97-6, C20H28O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Finasteride Impurity 14 (C20H28O3) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C20H28O3 |
| Molecular Weight | 316.43 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Finasteride Standards
- Finasteride Impurity 23 (CAS CATO-C4X-164523)
- Finasteride Impurity 43 (CAS 104214-61-1)
- Finasteride Impurity N89 (CAS 1180488-92-9)
- Finasteride Impurity 31 (CAS 1667725-37-2)
- Finasteride Impurity 34 (CAS 73711-89-4)
- Finasteride Impurity 36 (CAS CATO-C4X-164536)
- Finasteride Impurity N50 (CAS 10325-79-8)
- Finasteride Impurity 32 (CAS 51872-67-4)
Recommended Standards
- 508-71-4 77A9658D4X Rosenonolactone 9H-4a,1-(Epoxymethano)phenanthrene-9,12-dione, 7-ethenyldodecahydro-1,4b,7-trimethyl-, (1S-(1alpha,4aalpha,4balpha,7alpha,8abeta,10abeta))- CCRIS 6648 UNII-77A9658D4X (CAS 508-71-4)
- 1(4H)-Naphthalenone,4-[2-(3-furanyl)ethyl]-4a,5,6,7,8,8a-hexahydro-4-hydroxy-3,4a,8,8-tetramethyl-,(4R,4aS,8aS)- 23534-56-7 CTK4F1737 (CAS 23534-56-7)
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- [(3,4-dimethylphenyl)methyl](2-methoxyethyl)amine (CAS 1152657-49-2)
- [1-(2-Methylphenyl)cyclopentyl]methanol (CAS 1511284-93-7)
- D-Thr5-Tirzepatide (CAS CATO-CPTD788926)
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