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:
Nov. 06, 1990
Filed:
Apr. 01, 1988
Applicant:
Inventors:
Assignee:
Heumann Pharma GmbH & Co., Nuremberg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
548205 ; 549495 ;
Abstract
A new process for the preparation of the nitroethane derivatives, ranitidine and nizatidine, is described which takes place via intermediate products and enables the said compounds to be prepared with a higher degree of purity. Another advantage is that in contrast to the known processes, it is not accompanied by the liberation of the highly toxic and malodorous compound, methylmercaptan.