Solifenacin Impurity 31 CAS 1193-65-3
| CAS No. | 1193-65-3 |
| Molecular Formula | C7H11NO |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 161.63 g/mol gives Solifenacin Impurity 31 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Solifenacin Impurity 31 (CAS 1193-65-3), a pharmacopoeial impurity reference standard (molecular formula C7H11NOHCl, MW 161.63 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C7H11NOHCl, Solifenacin Impurity 31 contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 161.63 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H11NO HCl |
| Molecular Weight | 161.63 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Solifenacin Standards
- Solifenacin Impurity 19 (CAS 1029430-94-1)
- Solifenacin Impurity 8 (HCl) (CAS 1159826-34-2)
- Solifenacin EP Impurity A (CAS 118864-75-8)
- Solifenacin Impurity 28 (CAS 120577-33-5)
- Solifenacin Impurity 34 (CAS 1243274-81-8)
- Solifenacin Impurity 16 (CAS 134021-15-1)
- Solifenacin EP Impurity B (CAS 1353274-25-5)
- Solifenacin-d5 Succinate (CAS 1401416-00-9)
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