-
公开(公告)号：US11155548B2
公开(公告)日：2021-10-26
申请号：US16498196
申请日：2018-03-27
Applicant: Noramco, LLC
Inventor： Jessica Cardot , Joshua Sasine , Paul Nichols
IPC: C07D489/02 , C07D471/08 , C07D489/04
Abstract: A method of recovering a highly pure hydrocodone base from an impure hydrocodone preparation includes contacting the impure hydrocodone preparation with a weak acid in water to form a solution and adding a strong base to the solution in an amount sufficient to precipitate the pure hydrocodone base product. A highly pure hydrocodone base comprises less than 0.0025 wt % codeinone.
Search Results
1
records
(took 0.009 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
