Tolterodine EP Impurity C CAS 1161940-88-0
| CAS No. | 1161940-88-0 |
| Molecular Formula | C23H33NO |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Tolterodine EP Impurity C (CAS 1161940-88-0), a pharmacopoeial impurity reference standard (molecular formula C23H33NOHCl, MW 375.98 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Tolterodine EP Impurity C is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 375.98 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO manufactures Tolterodine EP Impurity C 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 | C23H33NO HCl |
| Molecular Weight | 375.98 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Tolterodine Standards
- Tolterodine Impurity 21 (CAS 1043911-42-7)
- Tolterodine Impurity N5 (CAS 1189501-90-3)
- Rac- Tolterodine-D14 Hydrochloride (CAS 1246816-99-8)
- rac-Tolterodine-d14 Tartrate (CAS 1246911-91-0)
- Tolterodine Impurity 4 (CAS 124935-88-2)
- Tolterodine Impurity 18 (CAS 124935-89-3)
- rac-Tolterodine hydrochloride, 98% (CAS 124936-75-0)
- Tolterodine Impurity N3 HCl (CAS 124936-83-0)
Recommended Standards
- Procaterol Impurity 9 (CAS CATO-C4X-18109)
- Dorzagliatin Impurity 15 (CAS CATO-C4X-344115)
- Fudosteine impurity 76 (CAS CATO-C4X-144776)
- 7-(4-Chlorobenzyl)-6,8-dimethyl-[1,2,4]triazolo[4,3-b]pyridazine (CAS 861210-58-4)
- 2-((Butylthio)methyl)-6,8-dichloro-3-(2,6-dimethylphenyl)quinazolin-4(3H)-one (CAS 338957-56-5)
- 4-Cyclopropyl-6-methoxypyrimidin-2-amine (CAS 21666-65-9)
- Ethyl 1-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-3a',4',8',8a'-tetrahydrospiro[piperidine-4,6'-[1,3]dioxepino[5,6-d]isoxazole]-3'-carboxylate (CAS 303152-94-5)
- Phenethyltriphenylphosphonium Bromide (CAS 53213-26-6)
- Ethyl 2-(4-methoxy-2-methylphenyl)-2-oxoacetate (CAS 951888-68-9)
- Semaglutide impurity 196 (CAS CATO-C4X-2226196)
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