The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 2016
Filed:
Aug. 14, 2014
Applicant:
Cody Laboratories, Inc., Cody, WY (US);
Inventors:
Zinovy Itov, Cody, WY (US);
Vladimir F. Kuznetsov, Cody, WY (US);
Iouri Voitsekhovski, Cody, WY (US);
Assignee:
Cody Laboratories, Inc., Cody, WY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 471/00 (2006.01); C07D 489/08 (2006.01);
U.S. Cl.
CPC ...
C07D 489/08 (2013.01);
Abstract
Synthetic methods are provided for preparation of oxycodone and salts thereof with an improved impurity profile. Thebaine is converted to 14-hydroxycodeinone sulfate intermediate to minimize a 7,8-dihydro-8,14-dihydroxycodeinone impurity. Efficient methods for conversion of oxycodone base to oxycodone hydrochloride are provided to minimize 14-hydroxycodeinone impurity in the final product.
Itov, Zinovy. (2016). Preparation of 14-hydroxycodeinone sulfate (U.S. Patent No. 9233972). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9233972
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile