abstract |
The present invention relates to a new crystal form of a CNS inhibitor, a preparation method and use thereof. Specifically, the present invention relates to 3-[(4s)-8-bromo-1-methyl-6-(2-pyridyl)-4H-imidazo[1,2-a][1,4]benzodi Aza -4-yl] A and B crystal forms of tosylate of methyl propionate, preparation method and application, the present invention has advantages in crystal form stability and hygroscopicity. |