Finasteride Impurity 42 CAS 116285-38-2
| CAS No. | 116285-38-2 |
| Molecular Formula | C24H36N2O4 |
| Molecular Weight | 416.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Finasteride Impurity 42 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 416.55 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Finasteride Impurity 42 (CAS 116285-38-2) is a certified pharmaceutical impurity reference standard with the molecular formula C24H36N2O4 and a molecular weight of 416.55 g/mol.
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), Finasteride 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 | C24H36N2O4 |
| Molecular Weight | 416.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
Related Finasteride Standards
- Finasteride Impurity 50 (CAS CATO-C4X-164550)
- Finasteride Impurity 52 (CAS CATO-C4X-164552)
- Finasteride Impurity 62 (CAS CATO-C4X-164562)
- Finasteride Impurity 16 (CAS 116285-41-7)
- Finasteride Carboxylic Acid (CAS 116285-37-1)
- Finasteride Impurity 53 (CAS CATO-C4X-164553)
- Finasteride Impurity 56 (CAS CATO-C4X-164556)
- Finasteride Impurity 59 (CAS CATO-C4X-164559)
Recommended Standards
- Progesterone Impurity 93 (CAS CATO-C4X-150293)
- Bimatoprost Impurity 18 (CAS CATO-C4X-196418)
- Hydrocortisone Impurity 69 (CAS 2905373-61-5)
- Tafluprost Impurity 12 (CAS CATO-C4X-216312)
- Semaglutide Impurity 2 (CAS CATO-C4X-22262)
- Rebamipide Impurity 3 (CAS 90098-05-8)
- Omarigliptin Impurity 3 (CAS 951127-25-6)
- Tert-butyl 4-((6-nitroquinoxalin-2-yl)amino)piperidine-1-carboxylate (CAS 1417793-38-4)
- 3-(Methylamino)-4-nitrophenol (CAS 14703-79-8)
- 2-(((2-Chloro-5-fluorophenyl)amino)methyl)phenol (CAS 1232810-85-3)
- 7-Fluorobenzoxazole (CAS 1267061-18-6)
- EDTA (disodium zinc tetrahydrate) (CAS 176736-49-5)
- 4-(2-(Chloromethyl)pentyl)thiazole (CAS 1483019-91-5)
- Semaglutide impurity 96 (CAS CATO-C4X-222696)
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