CA2873961A1 — Preparation containing 6,7-unsaturated-7-carbamoyl morphinan derivatives
Assigned to Shionogi and Co Ltd · Expires 2013-11-21 · 12y expired
What this patent protects
Provided is a solid preparation in which the elutability and stability of a 6,7-unsaturated-7-carbamoylmorphinan derivative is improved. A solid preparation or a coated solid preparation, which comprises a 6,7-unsaturated-7-carbamoylmorphinan derivative, croscarmellose sodium and…
USPTO Abstract
Provided is a solid preparation in which the elutability and stability of a 6,7-unsaturated-7-carbamoylmorphinan derivative is improved. A solid preparation or a coated solid preparation, which comprises a 6,7-unsaturated-7-carbamoylmorphinan derivative, croscarmellose sodium and iron oxide and does not contain titanium oxide, can have an elution ratio of 85% or more 15 minutes after the start of an elution test and can also have improved stability, particularly photostability.
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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