CA2814195C — Crystal of 6,7-unsaturated-7-carbamoyl morphinan derivative and method for producing the same
Assigned to Shionogi and Co Ltd · Expires 2020-03-10 · 6y expired
What this patent protects
Stable crystalline forms of a compound represented by the formula (IA): (see formula IA) an acid addition salt, and/or a solvate thereof are provided herein. The crystalline forms are extremely useful as materials for preparing medicines. Novel processes for preparing 6,7-unsatur…
USPTO Abstract
Stable crystalline forms of a compound represented by the formula (IA): (see formula IA) an acid addition salt, and/or a solvate thereof are provided herein. The crystalline forms are extremely useful as materials for preparing medicines. Novel processes for preparing 6,7-unsaturated-7-carbamoyl morphinan derivatives are also disclosed.
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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