Fesoterodine Impurity 11 CAS CATO-C4X-164411
| CAS No. | CATO-C4X-164411 |
| Molecular Formula | C26H30N2O2 |
| Molecular Weight | 402.53 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Fesoterodine Impurity 11 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Fesoterodine Impurity 11 (CAS CATO-C4X-164411), a pharmacopoeial impurity reference standard (molecular formula C26H30N2O2, MW 402.53 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Fesoterodine Impurity 11 (C26H30N2O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Fesoterodine Impurity 11 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.
Physical & Chemical Properties
| Molecular Formula | C26H30N2O2 |
| Molecular Weight | 402.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Fesoterodine Standards
- Fesoterodine Impurity 7 (CAS CATO-C4X-16447)
- Fesoterodine Impurity A Hydrochloride (CAS 250214-40-5)
- Fesoterodine Impurity N14 (CAS 895137-81-2)
- Fesoterodine Impurity 12 (CAS 1435768-96-9)
- Fesoterodine Impurity 13 (CAS 1333234-71-1)
- (S)-Fesoterodine Hydrochloride (CAS 1294517-14-8)
- Fesoterodine Impurity 1 (CAS 250214-44-9)
- Fesoterodine Impurity 2 (CAS 1431511-18-0)
Recommended Standards
- Oxazole, 2,2′-[(1R,3S)-1,2,2-trimethyl-1,3-cyclopentanediyl]bis[4,5-dihydro-4-phenyl-, (4S,4′S)- (CAS 906653-74-5)
- Finasteride Carboxylic Acid (CAS 116285-37-1)
- Oxazole, 2,2′-[(1R,3S)-1,2,2-trimethyl-1,3-cyclopentanediyl]bis[4,5-dihydro-4-phenyl-, (4R,4′R)- (CAS 906653-75-6)
- Revefenacin Impurity 2 (CAS CATO-C4X-20312)
- Talazoparib Impurity 5 (CAS CATO-C4X-33735)
- Ceftaroline Impurity 16 (CAS CATO-C4X-148316)
- Flurbiprofen impurity 103 (CAS CATO-C4X-1444103)
- (1S,2S)-1,2-Cyclopropanedicarboxylic Acid (CAS 14590-54-6)
- 3-((2-(Diethylamino)ethyl)amino)tetrahydrothiophene 1,1-dioxide dihydrochloride (CAS 2126178-81-0)
- 1-(2-ethyl-4-methyl-1,3-thiazol-5-yl)ethan-1-ol (CAS 1247198-05-5)
- Dicapryl Adipate (CAS 108-63-4)
- 7-Methoxy-3-methylisoquinoline (CAS 40134-07-4)
- 2-[3,5-Dibromo-4-(propan-2-yloxy)phenyl]-1,3-dioxolane (CAS 2221812-17-3)
- Peptide Impurity 06 (CAS CATO-CPTD788806)
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