Amino-dioxepane intermediates for the synthesis of new non-ionic contrast media
CA 1206159 A · Owner: The Regents Of The University Of California · Inventors: Ranganathan, Ramachandran; Sovak, Milos
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the formula: in which: D' is -CONHT' or -NHCOE'; T' is trihydroxybutyl or an acetal or ketal thereof; and E' is alkyl of from one to three carbon atoms having from zero to two oxy groups. The oxy groups are of from zero to three carbon atoms. two E' groups may be taken together to form a bond or alkylene group of from one to four carbon atoms having from zero to three oxy groups of from zero to two carbon atoms. The compounds are useful as intermediates in forming x-ray contrast agents.
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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 June 17, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 17, 2003.
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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.