The present invention relates to the new impurities of Fesoterodine, Fesoterodine symmetric dimer impurity and asymmetric dimer impurity, process for preparing and isolating thereof. The invention also deals with analytical standards and analytical methods used for the control of the production process and final quality of Fesoterodine.
The present invention relates to an improved process for the preparation of Fesoterodine and pharmaceutically acceptable salts thereof. The present invention particularly relates to a process for the preparation of fesoterodine and pharmaceutically acceptable salts thereof which involves use and preparation of R(+)benzyl tolterodine and fumarate salt of R(+)-[4-benzyloxy-3-(3-diisopropylamino-1-phenylpropyl)-phenyl]-methanol.
THE NOVEL REFERENCE MARKERS FOR FESOTERODINE FUMARATE
申请人:Jayaraman Venkatraman
公开号:US20150175526A2
公开(公告)日:2015-06-25
The present invention relates to the new impurities of Fesoterodine, Fesoterodine symmetric dimer impurity and asymmetric dimer impurity, process for preparing and isolating thereof. The invention also deals with analytical standards and analytical methods used for the control of the production process and final quality of Fesoterodine.