Patent · US Active

Process for reducing impurities in oxycodone base

US7875719B2 · kind B2 · utility

6Cited by

12References

8Claims

0Family size

Inventors

D. Phillip Cox · Audubon, US
Yong Zhang · Sichuan, CN

Key dates

Filing date	Dec 4, 2007
Grant date	Jan 25, 2011
Priority date	—
Expiry date	Sep 4, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D489/08
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention is directed to a process for using n-butanol to prepare an oxycodone base compositions having reduced levels of impurities such as 14-hydroxycodeinone and DHDHC.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.