Pharmaceutical composition containing 2-O-.alpha.-d-glucopyranosyl-l-ascorbic acid
AssigneeKabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
InventorsShuzo Sakai, Masaru Yoneyama, Toshio Miyake
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Abstract
2-O-.alpha.-D-Glucopyranosyl-L-ascrobic acid is crystallizable in its supersaturated solution. Crystalline 2-O-.alpha.-D-glucopyranosyl-L-ascorbic acid is substantially nonhygroscopic, free flowing, free of deliquescence, consolidation and direct reducing activity, but is readily soluble in water. Because of these, crystalline 2-O-.alpha.-D-glucopyranosyl-L-ascorbic acid is handleable with an ease, and superiorly high in stability and physiological activities. Thus, crystalline 2-O-.alpha.-D-gluco-pyranosyl-L-acorbic acid is favorably useful in vitamin C-enriching agents, foodstuffs, pharmaceuticals and cosmetics.
Claims2
In a pharmaceutical composition comprising L-ascorbic acid as an effective ingredient, together with a pharmaceutically acceptable carrier, the improvement wherein
- said L-ascorbic acid is in a form of crystalline 2-O-.alpha.-D-glucopyranosyl-L-ascorbic acid.
Dependencies are inferred from the claim text.