Tolterodine Impurity 8 CAS 851789-43-0
| CAS No. | 851789-43-0 |
| Molecular Formula | C16H18O2 |
| Molecular Weight | 242.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C16H18O2, Tolterodine Impurity 8 contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 242.31 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 process- or degradation-related impurity, Tolterodine Impurity 8 (CAS 851789-43-0, C16H18O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 manufactures Tolterodine Impurity 8 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H18O2 |
| Molecular Weight | 242.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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.) | 1987 |
Related Tolterodine Standards
- Tolterodine Impurity N5 (CAS 1189501-90-3)
- Tolterodine Impurity 26 (CAS 828933-86-4)
- Tolterodine Impurity 6 (CAS 209747-04-6)
- Tolterodine Impurity 13 (CAS 88407-29-8)
- Tolterodine Impurity 5 (CAS 349547-18-8)
- Tolterodine Impurity 1 (CAS 40546-94-9)
- Tolterodine Benzopyranone Impurity (CAS 16299-22-2)
- Tolterodine EP Impurity A (CAS 124937-73-1)
Recommended Standards
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com