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:
Mar. 08, 1977
Filed:
May. 11, 1976
Applicant:
Inventors:
Hans Wagner, Constance, DT;
Alfred Maierhofer, Allensbach, DT;
Assignee:
Deutsche Gold- und Silber-Scheideanstalt vormals Roessler, Frankfurt, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ;
Abstract
N-acetyl-L-methionine is prepared by reacting L-methionine with acetic anhydride in the presence of aqueous alkali at a temperature between 20.degree. and 60.degree. C. at a pH between 6.5 and 10. Preferably, there are used 1.05 to 1.70 moles of acetic anhydride per mole of L-methionine.