$150.00
| Purity | 98% |
| Packaging Size | 100mg |
| Grade Standard | Reagent Grade |
| Form | Powder |
| Packaging Type | Bag |
| Usage/Application | Pharmaceutical Research, Analytical Reference Standard |
| Catalog Number | Custom Supplier Dependent |
| Molecular Weight | 395.6 g/mol |
| Chemical Formula | C26H37NO2 |
The specific grade you mentioned (98% purity, API/Reagent Grade) is intended for analytical testing rather than patient consumption.
Impurity C (often identified in patent literature as the asymmetric dimer impurity) is a byproduct that can form during the synthesis or storage of Fesoterodine Fumarate. Because Fesoterodine is chemically unstable under certain conditions (like heat or moisture), it can undergo self-condensation or degradation.
Chemical Nature: It is a complex organic molecule related to the parent drug.
Purpose: It is used by pharmaceutical labs as a “Reference Marker” in HPLC (High-Performance Liquid Chromatography) to identify and quantify the levels of this specific impurity in a batch of the actual drug.
| Property | Typical Detail |
| Purity | 98% (minimum) |
| Grade | Reagent Grade / API Standard (Analytical use only) |
| Appearance | White to off-white powder |
| CAS Number | Varies by specific salt form (Parent CAS: 286930-03-8) |
| Storage | Highly sensitive; usually stored at 2–8°C or -20°C, protected from light and moisture. |
| Solubility | Typically soluble in DMSO or Methanol. |



