The present invention is a compound having use for prevention and treatment of diseases mediated by acid pump antagonistic activity, which has excellent liquid phase stability and solid phase stability, water solubility, precipitation stability, hygroscopicity, and chemical formula The present invention relates to a pyridolate salt and a malate salt of the compound represented by 1, and a method for producing the same.本発明は、アシッドポンプ拮抗活性により媒介される疾患の予防及び治療用途を有する化合物であって、液相安定性と固相安定性、水溶解度、析出安定性、吸湿性が全て優れた、化学式1で表される化合物のピドレート塩及びマレート塩、並びにその製造方法に関する。