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:
Apr. 23, 1996
Filed:
Sep. 19, 1994
Applicant:
Inventor:
Gregory D Harris, Wilmington, DE (US);
Assignee:
The Du Pont Merck Pharmaceutical Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
5483345 ;
Abstract
A method for isolating and purifying an ester functionalized imidazole compound, useful as an angiotensin (II) antagonist or as a key intermediate therefor, from a mixture of it with its regioisomer in a solvent, by treatment with an alkali metal hydroxide to achieve the regioselective hydrolysis of the undesired regioisomeric ester.