The present invention relates to impurities of donepezil, or a pharmaceutically acceptable salt thereof, which may be produced during synthesis and storage of donepezil, or a pharmaceutically-acceptable salt thereof, and to methods of identifying such impurities. The invention also relates to the use of these impurities in analytical techniques and to product that contain certain low levels of these impurities in particular the following impurities are disclosed: formula (I) and formula (II).
PROCESS FOR THE PREPARATION OF DONEPEZIL AND INTERMEDIATE COMPOUNDS THEREOF AS WELL AS HYDRATES OF DONEPEZIL
申请人:Pliva-Istrazivanje i Razvoj d.o.o.
公开号:EP1910291A1
公开(公告)日:2008-04-16
EP1992616A1
申请人:——
公开号:EP1992616A1
公开(公告)日:2008-11-19
IMPURITIES OF DONEPEZIL
申请人:PLIVA HRVATSKA d.o.o.
公开号:EP2027089A1
公开(公告)日:2009-02-25
[EN] PROCESS FOR THE PREPARATION OF DONEPEZIL AND INTERMEDIATE COMPOUNDS THEREOF AS WELL AS HYDRATES OF DONEPEZIL<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DONEPEZIL ET COMPOSÉS INTERMÉDIAIRES DE CEUX-CI ET HYDRATES DE DONEPEZIL
申请人:PLIVA ISTRAZIVANJE I RAZVOJ D
公开号:WO2007015052A1
公开(公告)日:2007-02-08
[EN] The present invention relates to a new process for the preparation of intermediate compounds useful in the manufacture of donepezil, or a pharmaceutically-acceptable salt thereof, and also relates to processes for preparing donepezil and to the novel intermediates per se. In addition the invention relates to various hydrated forms of donepezil. [FR] La présente invention concerne un nouveau procédé de préparation de composés intermédiaires utilisés dans la fabrication de donepezil, ou un sel pharmaceutiquement acceptable de ceux-ci, et concerne également des procédés de préparation de donepezil et les nouveaux intermédiaires en soi. De plus, l'invention concerne diverses formes d'hydratées de donepezil.