Testosterone EP Impurity K CAS CATO-C4X-24323
| CAS No. | CATO-C4X-24323 |
| Molecular Formula | C19H26O2 |
| Molecular Weight | 286.41 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, Testosterone EP Impurity K (CAS CATO-C4X-24323, C19H26O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Testosterone EP Impurity K (C19H26O2) 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Testosterone EP Impurity K 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 | C19H26O2 |
| Molecular Weight | 286.41 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| 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 Testosterone Standards
- Testosterone Impurity N35 (CAS 27833-18-7)
- Testosterone EP Impurity M (CAS 133177-83-0)
- Testosterone Impurity 25 (CAS 2585198-63-4)
- Testosterone EP Impurity L (CAS 2398-99-4)
- Testosterone EP Impurity I (CAS 2484-30-2)
- Testosterone Impurity 73 (CAS 2608628-54-0)
- Testosterone Impurity 8 (Androstane-3,17-Dione) (Mixture of Diastereomers) (CAS 5982-99-0)
- Testosterone Impurity 15 (CAS 1311972-85-6)
Recommended Standards
- 2,2-dimethylhexane-1,3-diyl dibutyrate (CAS CATO-C4X-32511)
- Gadoteridol impurity 40 (CAS 137145-75-6)
- 4-Androstene-3,17-Dione (CAS 63-05-8)
- Levonorgestrel Impurity 35 (CAS 300542-76-1)
- Lenvatinib Impurity 103 (CAS 2486-80-8)
- Isavuconazole Impurity 83 (CAS CATO-C4X-123683)
- Abemaciclib Impurity 80 (CAS CATO-C4X-293780)
- Daminozide-d4 (CAS CATO-CCPD103515)
- 4-Amino-2-cyclopropylbenzonitrile (CAS 1006899-23-5)
- Hexanoic acid, 2-ethyl-, 1,1'-(2,2-dimethyl-1,3-propanediyl) ester (CAS 28510-23-8)
- Ethyl 2-((2-ethoxyphenyl)amino)-2-oxoacetate (CAS 24439-50-7)
- 3-Methyl-[1,2,4]triazolo[4,3-a][1,3,5]triazine-5,7-diamine (CAS 330977-51-0)
- 5-Methoxy-8-nitroquinoline (CAS 36020-53-8)
- Fragment-[7-31]-Liraglutide (CAS CATO-C4X-199239)
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