abstract |
The invention belongs to the field of pharmacy and provides compound (S)-7-(4-(1-(methylsulfonyl)-piperidin-4-yl)phenyl)-N-(morpholin-2-ylmethyl) ) A pharmaceutically acceptable salt of pyrido[3,4-b]pyrazine-5-amine, its crystal form, solvate and crystal form, its pharmaceutical composition, and its preparation method and application. |