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. 13, 2021
Filed:
Mar. 30, 2017
Interquim, S.a., Sant Cugat del Vallès, ES;
Juan Sallares Rosell, Sant cugat del Vallès, ES;
Francisco Marquillas Olondriz, Sant cugat del Vallès, ES;
HEALTHTECH BIO ACTIVES, S.L.U., Barcelona, ES;
Abstract
The present invention relates to a process for the purification of methylcobalamin, namely from iron cyanide impurities, comprising contacting a solution comprising methylcobalamin and iron cyanide anions with a strongly basic anion exchange resin. This purification process can advantageously be used for removing iron cyanide impurities from methylcobalamin obtained by reductive methylation of cyanocobalamin and wherein iron (II) salts are used as cyanide scavengers, thus providing methylcobalamin with a reduced iron content. Methylcobalamin (R is methyl).