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:
Jan. 17, 1995
Filed:
Nov. 13, 1992
Applicant:
Inventors:
Fabrizio Marazza, Vico Morcote, CH;
Jean Jacques, Paris, FR;
Assignee:
Sapec S.A. fine chemicals, Lugano, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
514249 ; 544258 ;
Abstract
There are described ammonium salts of N.sup.5 -methyl-5,6,7,8-tetrahydrofolic acid as well as processes for their preparation. These ammonium salts may be separated into the single (6R) and (6S)-diastereoisomers. The separated diastereoisomers may be transformed into the corresponding alkali metal or alkaline earth metal salts.
Marazza, Fabrizio. (1995). (6r)- and (6s)-diastereoisomers of an ammonium salts of n.sup.5 (U.S. Patent No. 5382581). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5382581
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