PROBLEM TO BE SOLVED : To provide a pharmaceutically acceptable aqueous formulation of 1 -(4-{[4-(dimethylamino)piperidin-1-yl]carbonyl}phenyl)-3-[4-(4, 6-dimorpholin-4-yl-1, 3, 5-triazin-2-yl)phenyl]urea that is (a) chemically stable on storage (e.g., at 25癈 and 60%RH), (b) that facilitates effective intravenous (or parenteral) administration of a drug to a mammal, including a human being, and (c) achieves a solution concentration of at least 6 mg/ml. SOLUTION : The present invention relates to a pharmaceutical aqueous formulation that is transparent solution, comprising the formulation, or a pharmaceutically acceptable alkanesulphonate salt thereof. SELECTED DRAWING : Figure 1 COPYRIGHT : (C)2019, JPO&INPIT