The problem is to provide novel crystals of 5-glucosyl adenosine the crystal structure of which has been elucidated, a 5-glucosyl adenosine crystal-containing powder containing these crystals, the use of the same as a medical drug, and further, the use of the same as a cosmetic material or food product. The above-mentioned problem can be solved by providing crystals of 5-glucosyl adenosine hydrochloride formed from one molecule of 5-glucosyl adenosine and one molecule of hydrochloric acid.本發明之課題係提供一種結晶構造經解析之5’-葡糖基腺苷之新穎結晶與含有該結晶之含5’-葡糖基腺苷結晶粉末,以及該等作為醫藥品原材料之用途,以及作為化粧品原材料及食品原材料之用途。本發明藉由提供由5’-葡糖基腺苷1分子與鹽酸1分子所構成之5’-葡糖基腺苷鹽酸鹽之結晶而解決上述課題。
