Polymorph of (1-benzyl-4-[(5,6-dimethoxy-1-indanone)-2-y1]...

Details Polymorph of (1-benzyl-4-[(5,6-dimethoxy-1-indanone)-2-y1]... Polymorph of (1-benzyl-4-[(5,6-dimethoxy-1-indanone)-2-y1]...

2007-03-06

2007-03-06

Aulakh, Charanjit S. (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C514S319000

Reexamination Certificate

active

11145202

ABSTRACT:
The present invention discloses a novel, stable polymorph of 1-benzyl-4-[(5,6-dimethoxy-1-indanone)-2-yl] methyl piperidine hydrochloride commonly known as Donepezil hydrochloride. Further the present invention discloses a process for producing Donepezil HCl amorphous and its polymorph Form (VI).

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patent: 1 323 712 (2003-07-01), None
patent: WO 97/46527 (1997-12-01), None
patent: WO 2004/092137 (2004-10-01), None
Usuelli, A, International Search Report (PCT/IN2004/00027), Int'l filing date Jul. 28, 2004, Apr. 13, 2005, European Patent Office, Munich, Germany.

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