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:
Jul. 05, 2022
Filed:
Mar. 28, 2018
Applicant:
Merck Patent Gmbh, Darmstadt, DE;
Inventors:
Rudolf Moser, Schaffhausen, CH;
Viola Groehn, Dachsen, CH;
Fritz Blatter, Reinach, CH;
Martin Szelagiewicz, Basel, CH;
Ruth Boehni Stamm, Stein Am Rhein, CH;
Markus Ruettimann, Winterthur, CH;
Assignee:
MERCK PATENT GMBH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07D 475/04 (2006.01);
U.S. Cl.
CPC ...
C07D 475/04 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present invention is directed to a crystalline sodium salt of 5-methyl-(6S)-tetrahydrofolic acid wherein the molar ratio of 5-methyl-(6S)-tetrahydrofolic acid to sodium is from 1:1.51 to 1:2.5 and/or hydrates and/or solvates thereof, as well as, a process of obtaining the same.