N-(phosphonoacetyl)-l-aspartic acid compounds and methods for their preparation
CA 1110266 A · Owner: Starks Associates, Inc. · Inventors: Starks, Fred W.; Schultz, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
N-(Phosphonoacetyl)-L-aspartic acid (PALA) compounds especially, novel PALA compounds, and methods for their preparation in large amounts are disclosed, These methods include preparation of certain PALA compounds such are PALA dibenzyl ester, disodium PALA and the cyclohexylamine salt, of dibenzyl PALA. The compounds of this invention possess antitumor activity in vivo or are intermediates for the production of active antitumor PALA compounds.
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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 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 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.
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.