(S)-tert-Butyl 4-(6-amino-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-3-methylpiperazine-1-carboxylate 5g

(S)-tert-Butyl 4-(6-amino-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-3-methylpiperazine-1-carboxylate 5g