Testosterone Propionate EP Impurity D CAS 977-32-2
| CAS No. | 977-32-2 |
| Molecular Formula | C22H30O3 |
| Molecular Weight | 342.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Testosterone Propionate EP Impurity D (CAS 977-32-2), a pharmacopoeial impurity reference standard (molecular formula C22H30O3, MW 342.47 g/mol) used for the identification and quantification of trace impurities in APIs.
Testosterone Propionate EP Impurity D (C22H30O3) 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.
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), Testosterone Propionate EP Impurity D 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 | C22H30O3 |
| Molecular Weight | 342.47 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Testosterone Standards
- Testosterone Propionate EP Impurity E (CAS 25862-97-9)
- Testosterone Impurity 50 (CAS 58769-88-3)
- Testosterone Propionate (CAS 57-85-2)
- Testosterone Impurity 26 (CAS CATO-C4X-243226)
- Testosterone-16，16，17-D3 propionate (CAS 876054-54-5)
- Testosterone Impurity 14 (CAS CATO-C4X-132614)
- Testosterone Impurity 13 (CAS CATO-C4X-132613)
- Testosterone EP Impurity E (CAS 1045-69-8)
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Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com