Fesoterodine Impurity 5 CAS 1208313-12-5
| CAS No. | 1208313-12-5 |
| Molecular Formula | C26H37NO3 |
| Molecular Weight | 411.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Fesoterodine Impurity 5 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.
CATO supplies Fesoterodine Impurity 5 (CAS 1208313-12-5), a pharmacopoeial impurity reference standard (molecular formula C26H37NO3, MW 411.58 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C26H37NO3, Fesoterodine Impurity 5 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 411.58 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.
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 | C26H37NO3 |
| Molecular Weight | 411.58 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
Related Fesoterodine Standards
- (S)-Fesoterodine Hydrochloride (CAS 1294517-14-8)
- Fesoterodine Impurity 1 (CAS 250214-44-9)
- Fesoterodine Impurity 2 (CAS 1431511-18-0)
- Fesoterodine Impurity 12 (CAS 1435768-96-9)
- Fesoterodine Impurity 13 (CAS 1333234-71-1)
- Fesoterodine Impurity 10 (CAS CATO-C4X-164410)
- Fesoterodine Impurity 9 (CAS CATO-C4X-16449)
- Fesoterodine Impurity 11 (CAS CATO-C4X-164411)
Recommended Standards
- Tolterodine Impurity N1 (CAS 1380491-70-2)
- N-Arachidonoyltaurine (CAS 119959-65-8)
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- 4-((3-(4-(Trifluoromethyl)phenyl)-1,2,4-oxadiazol-5-yl)methoxy)benzaldehyde (CAS 1042852-63-0)
- 2-fluoro-2-(oxetan-3-yl)ethan-1-amine (CAS 1784577-45-2)
- n-Carbamoyl-2-(4,5-dichloro-6-oxopyridazin-1(6h)-yl)acetamide (CAS 877242-14-3)
- Semaglutide impurity 28 (CAS CATO-C4X-222628)
Why CATO?
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