Fesoterodine Impurity 7 CAS 1428856-47-6
| CAS No. | 1428856-47-6 |
| Molecular Formula | C26H33NO5 |
| Molecular Weight | 439.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Fesoterodine Impurity 7 (CAS 1428856-47-6) is a high-purity analytical reference standard with the molecular formula C26H33NO5 and a molecular weight of 439.54 g/mol.
The molecular framework of Fesoterodine Impurity 7 (C26H33NO5) 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 the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C26H33NO5 |
| Molecular Weight | 439.54 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
Related Fesoterodine Standards
- Fesoterodine Impurity 19 (CAS CATO-C4X-164419)
- Fesoterodine Impurity 14 (CAS 1262778-55-1)
- Fesoterodine Impurity 21 (CAS 1391913-28-2)
- Fesoterodine Impurity 10 (CAS CATO-C4X-164410)
- Fesoterodine Impurity 9 (CAS CATO-C4X-16449)
- (S)-Fesoterodine Hydrochloride (CAS 1294517-14-8)
- Fesoterodine Impurity 1 (CAS 250214-44-9)
- Fesoterodine Impurity 2 (CAS 1431511-18-0)
Recommended Standards
- 1312716-28-1 C26H33NO5 Scutebarbatine Z W1394 (CAS 1312716-28-1)
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Why CATO?
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