8-[(2,6-dimethylbenzyl)amino]-N-[(2S)-2-hydroxypropyl]-2,3-dimethylimidazo[1,2-a]pyridine-6-carboxamide 、
甲烷磺酸 在
异丙醇 、 mesylate salt 作用下,
以
异丙醇 为溶剂,
以29.9 g of the compound of the invention as mesylate salt was obtained的产率得到8-[(2,6-dimethylbenzyl)amino]-N-[(2S)-2-hydroxypropyl]-2,3-dimethylimidazo[1,2-a]pyridine-6-carboxamide mesylate salt