$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
buy Fesoterodine Fumarate Impurity .In chemical and pharmaceutical research, Fesoterodine Fumarate Impurity C is a critical reference standard used to ensure the quality and safety of the overactive bladder medication Fesoterodine (Toviaz).

The specific grade you mentioned (98% purity, API/Reagent Grade) is intended for analytical testing rather than patient consumption.

1. What is Impurity C?/buy Fesoterodine Fumarate Impurity

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.


2. Product Specifications (Standard)

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.