Pyridine derivatives, their preparation and their use
CA 1288102 C · Owner: Basf Aktiengesellschaft · Inventors: Koenig, Horst; Eisen, Gerhard; Von Philipsborn, Gerda
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are novel pyridine derivatives of the formula, (I), where R1 is hydrogen or hydroxyl R2 is hydroxymethyl, R3 is, dimethylaminomethyl pyrrolidinomethyl, piperidinomethyl, or m o r p h o l i n o m e t h y l or R2 and R3 together, may furthermore form the group -CH2-O-CH2where a hydrogen, atom may be replaced by hydroxyl or methoxy and R4 is n-, propyl, isopropyl or n-butyl and its salts with, physiologically tolerated acides. These derivatives are useful for the therapy of cardiac arrhythmias.
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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 August 27, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 27, 2008.
- 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.