Aripiprazole
CA 2676216 A1 · Owner: Tsujimori, Hisayuki · Inventors: Yamaguchi, Tatsuya; Tsujimori, Hisayuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides aripiprazole obtained by a process for preparing aripiprazole in a high purity and a high yield. According to the process of the present invention, aripiprazole is prepared by the reaction of a carbostyril compound represented by general formula (2):, (see formula 2), (wherein X is halogen atom lower alkanesulfonyloxy , group, arylsulfonyloxy group or an aralkylsulfonyloxy group), with a piperazine compound represented by formula (3):, (see formula 3), and/or a salt thereof in water in the presence of 0.5 , to 10 mol of an inorganic basic compound per mol of , the carbostyril compound (2).
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 18, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.