Testosterone Impurity 35 CAS CATO-C4X-243235
| CAS No. | CATO-C4X-243235 |
| Molecular Formula | C26H38O3 |
| Molecular Weight | 398.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Testosterone Impurity 35.
Testosterone Impurity 35 (CAS CATO-C4X-243235) is a certified pharmaceutical impurity reference standard with the molecular formula C26H38O3 and a molecular weight of 398.58 g/mol.
The molecular framework of Testosterone Impurity 35 (C26H38O3) 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
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 | C26H38O3 |
| Molecular Weight | 398.58 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Testosterone Standards
- Testosterone Enantate EP Impurity G (CAS 119698-27-0)
- Testosterone 17-Hexahydrobenzoate (CAS 14191-92-5)
- Testosterone Enantate EP Impurity F (CAS CATO-C4X-243251)
- Testosterone Enantate EP Impurity E (CAS 219296-36-3)
- Testosterone Enanthate (CAS 315-37-7)
- Testosterone Impurity 27 (CAS CATO-C4X-243227)
- Testosterone Impurity 29 (CAS CATO-C4X-243229)
- Testosterone Impurity 34 (CAS CATO-C4X-243234)
Recommended Standards
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- Finasteride Impurity 26 (CAS 133216-45-2)
- Metoclopramide Impurity 23 (CAS CATO-C4X-141523)
- Pyrilutamide Impurity N88盐酸盐 (CAS 1542258-18-3 (free base))
- Daptomycin Impurity 7 (CAS CATO-C4X-13787)
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- 2,9-Bis(2,6-dimethylphenyl)anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetraone (CAS 76372-76-4)
- 1-((7-Bromo-2,3-dihydrobenzo[b][1,4]dioxin-6-yl)methyl)pyrrolidine (CAS 1774903-59-1)
- Semaglutide impurity 109 (CAS CATO-C4X-2226109)
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