PROBLEM TO BE SOLVED: To provide an aqueous solution for injection, containing an aminobenzene sulfonic acid derivative and excellent in stability.SOLUTION: The aqueous solution for injection contains an aminobenzene sulfonic acid derivative represented by general formula (I) or its salt, or their hydrates or solvates, and contains trometamol, (wherein, R1 is H, 1-6C alkyl, 3-7C cycloalkyl, 1-4C halogenated alkyl, halogen, or 6-12C aryl R2 is H, 1-6C alkyl, or 7-12C aralkyl which may have one or more substituents selected from the group consisting of cyano, nitro, 1-6C alkoxy, halogen, 1-6C alkyl and amino n is an integer of 1 to 4).COPYRIGHT: (C)2012,JPO&INPIT【課題】アミノベンゼンスルホン酸誘導体を含有する安定性に優れた注射用水溶液を提供する。【解決手段】下記一般式(I)で示されるアミノベンゼンスルホン酸誘導体若しくはその塩、又はそれらの水和物若しくは溶媒和物を含有する注射用水溶液にトロメタモールを含有する注射用水溶液。【選択図】なし
