14-methoxymorphinan-6-one compounds
CA 1136130 A · Owner: Sisa, Incorporated · Inventors: Razdan, Raj K.; Ghosh, Anil C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Docket No. 11861, 14- METHOXYMOXYMORPHINAN-6-ONE COMPOUNDS ABSTRACT OF THE DISCLOSURE, Disclosed are 14-methoxy substituted 3-hydroxy or 3-methoxy -6-one morphinans characterized by the structural formula: wherein R is H or methyl; R1 is H, .alpha. methyl or .beta. methyl; and R2 is cyclobutylmethyl, cyclopropylmethyl tetrahydrofurfuryl or, dimethylallyl. The compounds of the present invention are variously useful as analgesics, narcotic antagonists and mixed analgesics /narcotic antagonists.
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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 November 23, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 1999.
- 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.