METHOD FOR STORING P1, P4-BIS(5'-URIDYL)TETRAPHOSPHATE CRYSTALS

摘要

[Problem] To provide a method for easily and stably storing P1, P4-bis(5'-uridyl)tetraphosphate crystals for a long period of time. [Solution] A method for storing P1, P4-bis(5'-uridyl)tetraphosphate crystals or a pharmaceutically acceptable salt thereof in a package, which is characterized by storing under one condition selected from among the storage conditions (1)-(3) described below. (1) The storage temperature is 0°C or higher but lower than 25°C. (2) The storage temperature is 25°C or higher but lower than 40°C, and the crystal pH is 4.5-8.0. (3) The storage temperature is 40°C or higher but lower than 60°C, and the crystal pH is 5.0-6.4.