Finasteride Impurity 23 CAS CATO-C4X-164523
| CAS No. | CATO-C4X-164523 |
| Molecular Formula | C20H28O3 |
| Molecular Weight | 316.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Finasteride Impurity 23 (C20H28O3) is characterized by a steroid core, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Finasteride Impurity 23 (CAS CATO-C4X-164523, C20H28O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
CATO manufactures Finasteride Impurity 23 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H28O3 |
| Molecular Weight | 316.43 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Finasteride Standards
- Finasteride Impurity 14 (CAS 302-97-6)
- 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
- Lovastatin Impurity 39 (CAS CATO-C4X-168439)
- 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)
- 4-Hydroxy-all-trans-Retinoic Acid (CAS 66592-72-1)
- 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)
- Atorvastatin Impurity 55 (CAS 196085-84-4)
- Tolterodine EP Impurity E HCl(R-Isomer) (CAS CATO-C4X-176724)
- Semaglutide impurity 63 (CAS CATO-C4X-222663)
- Tert-butyl 4-(2-oxopyrrolidin-1-yl)piperidine-1-carboxylate (CAS 1215527-41-5)
- 3'-Amino-2',3'-dideoxyuridine (CAS 84472-86-6)
- 2-(4-Methoxybenzoyl)-3,3-bis(methylthio)acrylonitrile (CAS 62455-63-4)
- Valsartan Impurity 123 (CAS CATO-C4X-1057123)
- 3-O-Hexadecyl-2-O-acetyl-sn-glycero-1-phosphocholine (CAS 117985-57-6)
- 2-(4-(1-(3-Bromophenyl)ethyl)piperazin-1-yl)ethanol (CAS 1704096-98-9)
- Semaglutide Impurity 18 (CAS 1671100-14-3)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com