5-METHYLTETRAHYDROFOLIC ACID CRYSTALLINE ALKALINE-EARTH SALTS (VARIANTS), METHOD FOR THEIR PREPARING AND COMPOSITION FOR PHARMACEUTICAL AGENTS AND NUTRITION SUPPLEMENTS Russian patent published in 2005 - IPC

FIELD: vitamins, chemical technology, food industry, pharmacy.

SUBSTANCE: invention relates to crystalline alkaline-earth salts of 5-methyl-(6R,S)-, -(6S)- and -(6R)-tetrahydrofolic acid with the content of at least one equivalent of crystallizing water per equivalent of 5-methyltetrahydrofolic acid, in particular, 5-methyl-(6R)-tetrahydrofolic acid crystalline calcium salt or to different types of 5-methyl(6S)-tetrahydrofolic acid crystalline calcium salts. These salts can be used in preparing medicinal agents or as a nutrition supplement for treatment or prophylaxis of folic acid-mediated diseases. Also, invention relates to a method for preparing crystalline salts of 5-methyl-(6R,S)-, -(6S)- and -(6R)-tetrahydrofolic acid by crystallization of the corresponding salt of 5-methyl-(6R,S)-, -(6S)- or -(6R)-tetrahydrofolic acid from a polar medium by using heat treatment at temperature above 60°C followed, if necessary, by drying the prepared product. Also, invention relates to a composition for pharmaceutical agents or nutrition supplements.

EFFECT: improved preparing method, valuable properties of salts and composition.

13 cl, 5 dwg, 4 tbl, 11 ex