6S-5- COMPOSITION OF 6S-5-METHYL TETRAHYDROFOLIC ACID OR SALT THEREOF AS WELL AS PREPARATION THEREFOR AND APPLICATION THEREOF

摘要

The present invention relates to a process for the production of (6S) -5-methyltetrahydrofolic acid or a salt thereof, wherein the content of (6S) -5-methyltetrahydrofolic acid or its salt is not less than 98.0%, the content of JK12A ) -5-methyltetrahydrofolic acid or a salt thereof, and its production and use.