To provide an FXR-agonist having low hydrophobicity, improved water solubility and good membrane permeability.A tris (hydroxymethyl) aminomethane salt of a compound represented by the following formula: Selection drawing None【課題】低い疎水性、向上した水溶解度および良好な膜透過性を有するFXR-作動薬の提供。【解決手段】下式化合物のトリス(ヒドロキシメチル)アミノメタン塩。【選択図】なし