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:
May. 21, 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 / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
548253 ; 5483335 ; 5483345 ; 5483121 ;
Abstract
A method for the isolation and purification of an imidazole compound, useful as an angiotensin II receptor inhibitor compound or as a key intermediate therefor, from a mixture of it with its regioisomer in a solvent by treament of the mixture with a strong acid to effect selective precipitation of the desired regioisomeric imidazole salt.