The present invention relates to a crystalline form of 1-cyclopropyl-8-methyl-7- (5-methyl-6-(methylamino)pyridin-3-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid the compound of formula-1, which is represented by the following structural formula-1. The present invention also relates to the process for preparation of crystalline form of compound of formula-1 and process for the preparation of the compound of formula-1.
本发明涉及1-环丙基-8-甲基-7-(5-甲基-6-(甲
氨基)
吡啶-3-基)-
4-氧代-1,4-二氢喹啉-3-羧酸的晶型,该化合物的
化学式为1,其结构式如下所示。本发明还涉及制备化合物1的晶型的方法以及制备化合物1的方法。