US Patent

US8871779 — Process for preparing morphinan-6-one products with low levels of α,β-unsaturated ketone compounds

Composition of Matter · Assigned to Mallinckrodt LLC · Expires 2029-11-22 · 4y remaining

Vulnerability score 15/100 Ironclad — strong claim type, well-established, deep family

What this patent protects

This patent protects a process for preparing highly pure morphinan-6-one products by reducing impurities with a sulfur-containing compound.

USPTO Abstract

The present invention generally relates to processes for preparing highly pure morphinan-6-one products. The processes involve reducing the concentration of α,β-unsaturated ketone compounds present as impurities in morphinan 6 one products or reaction mixtures including morphinan 6 one compounds by treatment with a sulfur-containing compound. (A)

Drugs covered by this patent

Patent Metadata

Patent number
US8871779
Jurisdiction
US
Classification
Composition of Matter
Expires
2029-11-22
Drug substance claim
Yes
Drug product claim
No
Assignee
Mallinckrodt LLC
Source
FDA Orange Book + USPTO grounding via Google Patents

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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