PROBLEM TO BE SOLVED: To provide kit formulations for injection capable of preparing an injection excellent in the temporal stability of azacytidine or a salt thereof which are active ingredients, in the dispersion stability of a solid formulation, and in easiness of collecting from a container liquid compositions for use in the preparation of an injection containing azacytidine or a salt thereof as an active ingredient and methods for preparing an injection in which the liquid composition is used.SOLUTION: The present invention provides a kit formulation for injection comprising a solid formulation containing azacytidine or a salt thereof as an active ingredient, and a liquid composition for used in the preparation of an injection by mixing with the solid formulation, the liquid composition containing 45 volume % to 70 volume % of polyethyleneglycol, and 20 volume % to 45 volume % of water a liquid composition thereof and a preparation method of an injection in which the liquid composition is used.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】有効成分であるアザシチジン又はその塩の経時安定性、固形製剤の分散安定性、及び容器からの採取性に優れた注射液を調製可能な注射用キット製剤、アザシチジン又はその塩を有効成分とする注射液の調製に用いられる液体組成物、及びその液体組成物を用いた注射液の調製方法を提供する。【解決手段】アザシチジン又はその塩を有効成分として含有する固形製剤と、45体積%~70体積%のポリエチレングリコール及び20体積%~45体積%の水を含有し、固形製剤と混合して注射液を調製するために用いられる液体組成物と、を備える注射用キット製剤、その液体組成物、及びその液体組成物を用いた注射液の調製方法。【選択図】なし
