tert-Butyl (1-(2-methoxyethyl)-4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-6-yl)(methyl)carbamate 50mg

tert-Butyl (1-(2-methoxyethyl)-4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-6-yl)(methyl)carbamate 50mg