6-(tert-Butyl)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid 1g

6-(tert-Butyl)-1-(1,1-dioxidotetrahydrothiophen-3-yl)-3-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid 1g