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. 13, 1984
Filed:
Nov. 30, 1982
Applicant:
Inventors:
Assignee:
Sankyo Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544 28 ; 544 29 ; 544 30 ;
Abstract
The acetoxymethyl group at the 3-position of 3-acetoxymethylcephalosporanic acids and salts thereof may be replaced by an alkoxymethyl group, by reacting the 3-acetoxymethylcephalosporanic acid or salt thereof with a C.sub.1 -C.sub.4 alkanol in the presence of halide ions.