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Expired Canadian patentCanada

Process for preparing a new p-acetamidophenol derivative

CA 1096396 A · Owner: Hexachimie · Inventors: Cognacq, Jean C.

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Abstract From the Canadian patent

PATENT, Process for preparing a new p-acetamidophenol derivative, Societe Anonyme named: HEXACHIMIE ABSTRACT, The invention relates to a process for the preparation of p-acetamidophenyl diethylaminoacetate of formula (I) (I), or a pharmaceutically acceptable acid addition salt of the said compound, characterised in that a p-acetamidophenyl haloacetate is reacted with at least an equivalent amount of diethylamine in the presence of an acceptor for the hydrohalic acid formed during the reaction, and the resulting p-acetamidophe diethylaminoacetate formed is then isolated and if desired transformed into a non-toxic acid addition salt in a manner known per se by the action of the corresponding …

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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 February 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 24, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 20, 1977
GrantedFebruary 24, 1981
Term endedFebruary 24, 1998
Patent numberCA 1096396 A
Classification (IPC)C07C231/12 +1 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedMay 20, 1977Patent grantedFeb 24, 1981Term endedFeb 24, 1998

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.