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:
Aug. 20, 1991
Filed:
Dec. 05, 1989
Applicant:
Inventors:
Assignee:
Baxter International Inc., Deerfield, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07D / ;
U.S. Cl.
CPC ...
560143 ; 546342 ;
Abstract
Bis(salicyl) diesters useful as cross-linking agents for hemoglobin are prepared in high yield and purity by reacting salicylic acid or a derivative thereof with a lower aliphatic dicarboxylic acid halide in a lower aliphatic ketone or nitrile solvent in the presence of a pyridine derivative. The desired diester is recovered from the resulting insoluble pyridine derivative salt.