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:
Feb. 07, 1995
Filed:
Jul. 16, 1992
Applicant:
Inventors:
Bruno K Radatus, Brantford, CA;
Khashayar Karimian, Brantford, CA;
Assignee:
ACIC (Canada) Inc., Ontario, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H / ; A61K / ;
U.S. Cl.
CPC ...
536 2854 ; 564230 ;
Abstract
A process for recovering 3'-azido-3'-deoxythymidine (AZT) or a salt thereof from a mixture of chemicals involving the reaction of the AZT with guanidine to form a salt precipitate. The salt precipitate is then acidified to pH of less than about 9 to yield free AZT, which can then be crystallized from solution. 3'-Azido-3'-deoxythymidine and its salts, also known as AZT and Zidovudine, is used in the treatment of AIDS patients.