Process for producing 1-substituted aryl-1, 4-dihydro-4-oxonaphthyridine derivative, intermediates therefor and porcesses for producing the intermediates
CA 1340648 C · Owner: Narita, Hirokazu · Inventors: Nagumo, Katsuyuki; Narita, Hirokazu; Kitayama, Isao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to 2-(5-fluoronicotinoyl)acetic acid derivative and a salt thereof which are useful as an intermediate for producing a 1-substituted aryl 1-1,4-dihydro-1,4-dihydro-4oxonaphthyridine , derivative and a process for producing the same.
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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
- Granted July 13, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 2016.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.