Tolterodine Impurity 26 CAS 828933-86-4
| CAS No. | 828933-86-4 |
| Molecular Formula | C16H16O2 |
| Molecular Weight | 240.30 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Tolterodine Impurity 26 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.
As a process- or degradation-related impurity, Tolterodine Impurity 26 (CAS 828933-86-4, C16H16O2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Tolterodine Impurity 26 (C16H16O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 240.30 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C16H16O2 |
| Molecular Weight | 240.30 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
Related Tolterodine Standards
- Tolterodine Impurity 6 (CAS 209747-04-6)
- Tolterodine Impurity N5 (CAS 1189501-90-3)
- Tolterodine Impurity 8 (CAS 851789-43-0)
- 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
- Oseltamivir Impurity 89 (CAS 1234858-94-6)
- Oseltamivir Impurity 85 (CAS CATO-C4X-172085)
- Butalbital Impurity 3 (CAS 53943-65-0)
- Oseltamivir Impurity 29 (CAS CATO-C4X-172029)
- Riboflavin Impurity 31 (CAS CATO-C4X-181931)
- Pazufloxacin Impurity 18 (CAS 677004-96-5)
- Ropinirole Hydrochloride EP Impurity D (CAS 173990-76-6)
- ethyl 2-(trifluoromethylsulfonyloxy)cyclohexene-1-carboxylate (CAS 122135-83-5)
- 4-Chloro-6-(6-(trifluoromethyl)pyridin-3-yl)pyrimidine (CAS 1590398-07-4)
- 2-((3,4,5-Trifluorophenoxy)methyl)benzaldehyde (CAS 1443346-56-2)
- tert-Butyl 2-(((benzyloxy)carbonyl)amino)-7-azaspiro[3.5]nonane-7-carboxylate (CAS 1445951-36-9)
- 3-(1-(Aminomethyl)cyclohexyl)azetidin-3-ol (CAS 1502352-76-2)
- 2-((tert-Butoxycarbonyl)amino)-2-(thiophen-2-yl)acetic acid (CAS 28044-76-0)
- Semaglutide impurity 93 (CAS CATO-C4X-222693)
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