Substituted - 3 - hydrazinopropionate
CA 1249299 A · Owner: Institut Organicheskogo Sinteza Akademii Nauk Latviiskoi Ssr · Inventors: Veveris, Maris M.; Kalvinsh, Ivars Y.; Kauss, Valeryans Y.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Substituted 3-hydrazinopropionates comprising compounds of the general formula:, wherein R1 R2 = H, an alkyl, a substituted alkyl, hydroxycarbonyl, alkoxycarbonyl, an aryl, an aralkyl an unsatura-, ted alkyl, a substituted aryl or a substituted aralkyl: wherein R7, R8 = H, an alkyl, an unsaturated alkyl an aralkyl, an aryl, a substituted alkyl R9 = OH, an, alkoxy, an aralkoxy, an alkyl an unsaturated alkyl, an aryl, a substituted aryl an aralkyl;, R4 is -C?N, -COR10, wherein R10 = OR11 NR12R13, where R11 is H, an alkyl, an aralkyl and an alkali metal R11 and R12 are each H, an alkyl, an aralkyl an aryl;, R5, R6= an alkyl, an aryl, an aralkyl. These compounds possess an antiarrhythmic …
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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 January 24, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 24, 2006.
- 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
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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.