Fesoterodine Impurity 8 CAS CATO-C4X-16448
| CAS No. | CATO-C4X-16448 |
| Molecular Formula | C19H24N2O3 |
| Molecular Weight | 328.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Fesoterodine Impurity 8 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 8 (CAS CATO-C4X-16448), a pharmacopoeial impurity reference standard (molecular formula C19H24N2O3, MW 328.41 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Fesoterodine Impurity 8 (C19H24N2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. 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 328.41 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C19H24N2O3 |
| Molecular Weight | 328.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Fesoterodine Standards
- Fesoterodine Impurity 24 (CAS 1055330-27-2)
- Fesoterodine Impurity 26 (CAS CATO-C4X-164426)
- Fesoterodine Aldehyde of Diol (CAS 214601-12-4)
- Fesoterodine Impurity A (CAS 200801-70-3)
- Fesoterodine Diol (R)-Isomer (CAS 207679-81-0)
- Fesoterodine Impurity 17 (CAS CATO-C4X-164417)
- Fesoterodine Impurity O (CAS 250214-69-8)
- Fesoterodine Related Impurity 11 (CAS 194482-42-3)
Recommended Standards
- Formoterol Impurity 97 (CAS CATO-C4X-152597)
- Peramivir impurity 132 (CAS 2641256-92-8)
- Formoterol Impurity 62 (CAS CATO-C4X-152562)
- Peramivir Impurity 14 (CAS 2124296-37-1)
- Bortezomib Impurity 21 (CAS 18680-27-8)
- Terazosin EP Impurity G (CAS 105356-89-6)
- Rapamycin Impurity 23 (CAS CATO-C4X-174623)
- 7-Hydroxy-6-methoxy-3,4-dihydroisoquinoline (CAS 4602-73-7)
- Clonazepam impurity 9 (CAS CATO-C4X-14039)
- 1-{2-[7-(furan-2-yl)pyrazolo[1,5-a]pyrimidin-2-yl]thiophen-3-yl}-2,5-dimethyl-1H-pyrrole (CAS 861209-14-5)
- 2-Bromo-1-(2,3-difluoro-4-methylphenyl)ethan-1-one (CAS 1221684-44-1)
- 4-(3-Fluorophenyl)-3-fluorophenol (CAS 1052241-69-6)
- (S,R)-In-Quinox (CAS 2055935-90-3)
- Renin Inhibitor Peptide (CAS 50410-01-0)
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