PROBLEM TO BE SOLVED: To provide a new crystal form of 2,3-dimethyl-8-(2,6-dimethylbenzylamino)-N-hydroxyethyl-imidazo[1,2-a]pyridine-6-carboxamide mesylate, excellent in chemical stability, stability in a solid state and shelf life.SOLUTION: There are provided the crystals or the like obtained by the following processes, for example: (a) dissolving or suspending in a suitable solvent, 2,3-dimethyl-8-(2,6-dimethylbenzylamino)-N-hydroxyethyl-imidazo[1,2-a]pyridine-6-carboxamide (b) adding methanesulfonic acid to the resultant solution or suspension at high temperature and (c) crystallizing the solution or suspension to isolate.COPYRIGHT: (C)2012,JPO&INPIT【課題】化学的安定性、固体状態の安定性、及び「保存寿命」に優れた2,3-ジメチル-8-(2,6-ジメチルベンジルアミノ)-N-ヒドロキシエチル-イミダゾ[1,2-a]ピリジン-6-カルボキシアミドメシラート塩の新規な結晶形の提供。【解決手段】下記の工程例で得られた結晶など:a)2,3-ジメチル-8-(2,6-ジメチルベンジルアミノ)-N-ヒドロキシエチル-イミダゾ[1,2-a]ピリジン-6-カルボキシアミドを適当な溶媒中に溶解又は懸濁させ、b)メタンスルホン酸を高温で加え、c)溶液又は懸濁液を結晶させて単離する。【選択図】なし
