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:
Jun. 27, 2017
Filed:
Dec. 08, 2014
Applicant:
GE Healthcare As, Oslo, NO;
Inventors:
Inger Dagny Saanum, Lindesnes, NO;
Torfinn Haaland, Lindesnes, NO;
Rita Heskestad Kalleberg, Lindesnes, NO;
Assignee:
GE Healthcare AS, , NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 231/02 (2006.01); C07C 237/46 (2006.01);
U.S. Cl.
CPC ...
C07C 231/02 (2013.01); C07C 231/02 (2013.01); C07C 237/46 (2013.01);
Abstract
An alternative acetylation process for the synthesis of 5-acetamido-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide ('Compound A'), an intermediate in the industrial preparation of non-ionic X-ray contrast agents, is described. The process can be performed on an industrial scale to produce Compound A with improved purity and improved yields compared to the established processes.