Process for the production of n-formyl-aspartyl- phenylalanine or its methyl ester
CA 1314358 C · Owner: Kishimoto, Shinichi · Inventors: Kishimoto, Shinichi; Tsuji, Toshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing of N-formyl-aspsrtyl-phnylalanine or its metyl ester, wherein aspartic acid is reacted with formic acid and acetic anhydride in about stoichiometoric quantities in the presence of or in the absence of a catalyst and phenylalanine or its methyl ester is directly added to the dehydration mixture. This process has a higher yield of the desired N-formyl- -dipeptide and minimizes the amount of by product formed and the unreacted starting materials.
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
- Granted March 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 9, 2010.
- 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.