Q10 REDUCED COENZYME Q10 CRYSTAL HAVING EXCELLENT STABILITY

摘要

There is no report that there is a crystalline polymorphism for reduced coenzyme Q10, and it is thought that the crystal form obtained in the past is unique. The present invention relates to a method for producing crystals of reduced coenzyme Q10 having an endothermic peak showing melting at 54 +/- 2 DEG C and / The present invention relates to a reduced coenzyme Q10 crystal exhibiting characteristic peaks at diffraction angles (2 罐 짹 0.2 째) of 11.5 째, 18.2 째, 19.3 째, 22.3 째, 23.0 째 and 33.3 째 in X-ray (Cu-Kα) diffraction. The crystal form is a novel reduced coenzyme Q10 crystal having a melting point higher than that of a conventionally known reduced coenzyme Q10 crystal, a low solubility in a solvent, and excellent stability.