Oxybutynin Impurity 3 CAS 1215677-72-7
| CAS No. | 1215677-72-7 |
| Molecular Formula | C23H33NO3 |
| Molecular Weight | 371.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Oxybutynin Impurity 3 (CAS 1215677-72-7) is a certified pharmaceutical impurity reference standard with the molecular formula C23H33NO3 and a molecular weight of 371.51 g/mol.
Oxybutynin Impurity 3 (C23H33NO3) contains a steroid core, an amide group, 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), Oxybutynin Impurity 3 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 | C23H33NO3 |
| Molecular Weight | 371.51 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 |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
Related Oxybutynin Standards
- Oxybutynin N- oxide (CAS 80976-68-7)
- R-Oxybutynin D10 (CAS CATO-C4X-197215)
- S-Oxybutynin D10 (CAS CATO-C4X-197216)
- Oxybutynin Impurity 7 (CAS CATO-C4X-19727)
- Oxybutynin Impurity N1 (Mixture of Diastereomers) (CAS 1199574-71-4)
- Oxybutynin Impurity A (CAS CATO-C4X-197212)
- Oxybutynin impurity 10 (CAS CATO-C4X-197210)
- Oxybutynin Impurity 8 (CAS CATO-C4X-19728)
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