2-alkylated-cyclodextrin derivatives: reversal agents for drug-induced neuromuscular block
CA 2437851 C · Owner: Organon Biosciences Nederland B.V. · Inventors: Tarver, Gary; Zhang, Mingqiang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a 2-alkylated-cyclodextrin derivative having the general formula I wherein m is 0-7 and n is 1-8 and m+n= 7 or 8; R is (CH2)p-phenylene-(CH2)q (C1-6)alkylene, or (CH2)r-S-(C1-4)alkylene of which each alkylene group may , be substituted with 1-3 OH groups; p and r are independently 1-4; q is 0-4; X is COOH, SO2OH, (CH2-CH2-O)s-H or OH; s is 1-3; or a pharmaceutically acceptable salt thereof. The 2-alkylated-cyclodextrin derivatives are suitable for use in the reversal of drug-induced neuromuscular block.
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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
- Filed February 14, 2002 and granted May 17, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 2024.
- 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.