2-(nitropyridinyl) amino phenyl arylmethanones in a process for preparing pyrido 1,4 benzodiazepines
CA 1194869 A · Owner: Robins (A.H.) Company, Incorporated · Inventors: Lo, Young S.; Taylor, Chandler R. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A PROCESS FOR PREPARING PYRIDO1,4BENZODIAZEPINES, 2-(Nitropyridinyl)aminophenylarylmethanones as chemical intermediate and/or having antidepressant activity having the formula:, wherein; B is carbonyl, thioxomethyl, ketal or thioketal R is hydrogen or -alk1-Q, Q is hydrogen -NR1R2 or halogen, are disclosed in a process for preparing pyrido1,4 benzodiazepines.
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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 October 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.