Testosterone Isocaproate EP Impurity E CAS 10312-45-5
| CAS No. | 10312-45-5 |
| Molecular Formula | C25H38O3 |
| Molecular Weight | 386.57 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.
CATO supplies Testosterone Isocaproate EP Impurity E (CAS 10312-45-5), a pharmacopoeial impurity reference standard (molecular formula C25H38O3, MW 386.57 g/mol) used for the identification and quantification of trace impurities in APIs.
Testosterone Isocaproate EP Impurity E (C25H38O3) 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.
As a certified reference material (CRM), Testosterone Isocaproate EP Impurity E 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 | C25H38O3 |
| Molecular Weight | 386.57 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 |
| CAS Registry Year (est.) | 1959 |
Related Testosterone Standards
- Testosterone isocaproate (CAS 15262-86-9)
- Testosterone-d3 17β-Hemisuccinate (CAS 521-15-3)
- Testosterone Impurity 52 (CAS CATO-C4X-243252)
- Testosterone-d3 17β-Hemisuccinate (CAS 521-15-3(unlabelled))
- Testosterone benzoate (CAS 2088-71-3)
- Testosterone Impurity 75 (CAS CATO-C4X-243275)
- Testosterone Enantate EP Impurity G (CAS 119698-27-0)
- Testosterone 17-Hexahydrobenzoate (CAS 14191-92-5)
Recommended Standards
- 6-((tert-Butyldiphenylsilyl)oxy)-2,3-dihydro-1H-inden-1-one (CAS 440105-91-9)
- Luffariellolide (CAS 111149-87-2)
- 3,4-Di-o-acetyl-6-o-triisopropylsilyl-d-glucal (CAS 308796-41-0)
- Dexanabinol (CAS 112924-45-5)
- Butylphthalide Impurity 59 (CAS 503822-00-2)
- Neostigmine impurity 42 (CAS CATO-C4X-204242)
- Lumateperone Impurity 46 (CAS CATO-C4X-220146)
- 4-Cyclopropoxy-N1,N2,N2-trimethylphthalamide (CAS 1243410-48-1)
- 3-Cyclobutyl-4-fluoro-1h-indole (CAS 1707361-87-2)
- 3-(5,6-Dihydro-4H-pyrrolo[3,2,1-ij]quinolin-1-yl)propan-1-amine (CAS 586336-42-7)
- 2-Amino-3-(3-chloro-4-(trifluoromethyl)phenyl)propanoic acid (CAS 1259966-92-1)
- Boc-Pro-Pro-Pro-Pro-OH (CAS 29804-52-2)
- 1-[4-(3,3-Dimethyl-2-oxoazetidin-1-yl)phenyl]-3,3-dimethylazetidin-2-one (CAS 27983-77-3)
- Semaglutide impurity 40 (CAS CATO-C4X-222640)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com