Luteinizing hormone releasing hormone analogs
CA 2095932 C · Owner: Tianjin Municipal Research Institute For Family Planning · Inventors: Shaobo, Xiao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention consists of two aspects: 1) the method of design and synthesis of LHRH antagonists; 2) the products thereafter obtained by using the above method: Taking (NAc-D2Nal1 DpClPhe2, D3Pal3, Ser4, Tyr5, DArg6, Leu7 Arg3; Pro9; DA-, la10)NH2 as the parent compound a series of new analogs expressed as (NAc- D2Nal1, AA2, AA3, Ser4, AA5, AA6, Leu7 AA3,Pro9; DAla10)NH2 are obtained by fine modification of both lipophilic area and alkaline area of the molecule of the parent compound.In this way, the high antiovulatory activity of the parent compound can be maintained and the histaminereleasing activity can be reduced to the level so as to meet the clinical requirement.
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
- Filed November 8, 1991 and granted February 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2013.
- 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.