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:
Feb. 23, 1993
Filed:
Jul. 23, 1992
Applicant:
Inventors:
Gareth Griffiths, Visp, CH;
Aleksander Warm, Visperterminen, CH;
Felix Previdoli, Brig, CH;
Gary Ryan, Visp, CH;
Assignee:
Lonza, Ltd., Gampel/Valais, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564040 ;
Abstract
A process for the production of 1-(N-methanesulfonyl-N-methylaminosulfonyl)-3-(2-pyrimidyl) urea derivatives (MMSPH). In the process, methanesulfonylmethylamine (MMSA) is first converted with chlorosulfonylisocyanata (CSI) into a 1-methanesulfonyl-1-methyl-3- (N-methanesulfonyl-N-methylaminosulfonyl) urea derivative (MMMSH) and then the MMMSH is converted with a 2-aminopyridine into the end product.