tert-Butyl 4-(4-chloro-3-methyl-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidine-1-carboxylate 1g

tert-Butyl 4-(4-chloro-3-methyl-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidine-1-carboxylate 1g