| abstract |
The present invention is (I) 5-methyl- (6S) -tetrahydrofolic acid, A crystalline salt of 5-methyl- (6S) -tetrahydrofolic acid, which comprises (ii) sodium, and (iii) an organic base having a pKa value of 6 to 11, which is 5-methyl- (6S) -tetrahydrofolic acid. And a sodium in a molar ratio of 1: 0.5 to 1: 1.5 and a molar ratio of 5-methyl- (6S) -tetrahydrofolic acid to an organic base in a ratio of 1: 0.5 to 1: 1.5, and / Alternatively, it relates to hydrates and / or solvates thereof and methods for obtaining them. [Selection diagram] Figure 1 |