Fluorogenic benzoxazoles
CA 2017269 C · Owner: Behring Diagnostics Gmbh · Inventors: Habenstein, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to fluorogenic compounds of the formula (I), (see formula I), in which X is O or S, R is a radical which can be split off by enzymatically catalyzed hydrolysis;, R1 is H, C1- to C4-alkyl or phenyl which can be, substituted by 1 to 3 -CH3; and A has a molecular structure which lengthens the mesomerism of the benzohetercyclic ring system in, particular includes aromatic or heteroaromatic and also substituted and optionally benzo-fused 6- and 5-membered ring systems which can also attack in the 2-position of the benzoheterocyclic radical via one or more multiple bonds, or an electron-withdrawing group, such as CN or CF3. for the detection of hydrolyzing enzymes and the …
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 May 22, 1990 and granted January 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 2012.
- 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.