O-Isobutyryl (R)-Fesoterodine

Stability-​indicating RP-​HPLC method for the estimation of process-​related impurities and degradation products in fesoterodine fumarate by using a mass spectrometric compatible mobile phase
By Kumar, Nitin; Sangeetha, D.; Kalyanraman, L.
From Journal of Chromatographic Science (2021), 59(2), 154-164
 
Development and validation of UV​/visible spectrophotometric method for the estimation of fesoterodine in bulk and pharmaceutical formulations
By Vasanth, P. M.; Prasad, C. Vara; Lakshmi, G. Reddy; Lokes, Y.; Thyagaraju, K.
From European Journal of Biomedical and Pharmaceutical Sciences (2019), 6(3), 325-327

Isolation and characterization of fesoterodine fumarate related impurity
By Rajput, A. P.; Sonanis, Manohar C.
From Asian Journal of Chemistry (2013), 25(11), 6369-6371

O-Isobutyryl (R)-Fesoterodine is chemically 2-Methylpropanoic Acid 2-[3-[(1R)-Bis(1-methylethyl)amino]-1-phenylpropyl]-4-[(2-methyl-1-oxopropoxy)methyl]phenyl Ester. It is also known as Fesoteridone Diester Impurity. O-Isobutyryl (R)-Fesoterodine is supplied with detailed characterization data compliant with regulatory guideline. O-Isobutyryl (R)-Fesoterodine can be used for the analytical method development, method validation (AMV), Quality Controlled (QC) application for Abbreviated New Drug Application (ANDA) or during commercial production of Fesoterodine.

The product can be used as reference standards and further traceability against pharmacopeial standards (USP or EP) can be provided based on feasibility. SynZeal products are for analytical purpose only and not for human use.