EP2639234A1 — Crystalline 6,7-unsaturated-7-carbamoyl morphinane derivative, and method for producing same
Assigned to Shionogi and Co Ltd · Expires 2013-09-18 · 13y expired
What this patent protects
Stable crystalline forms of a compound represented by the formula (IA): , an acid addition salt, and/or a solvate thereof are provided by the present invention. Said crystalline forms are extremely useful as materials for preparing medicines. Novel processes for preparing 6…
USPTO Abstract
Stable crystalline forms of a compound represented by the formula (IA): , an acid addition salt, and/or a solvate thereof are provided by the present invention. Said crystalline forms are extremely useful as materials for preparing medicines. Novel processes for preparing 6,7-unsaturated-7-carbamoyl morphinan derivatives are also provided by the present invention.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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