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3,6-Dimethyl-1-phenyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid

3,6-Dimethyl-1-phenyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid ethyl ester

1-(4-Methoxyphenyl)-6-methyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid ethyl ester

3,6-Dimethyl-1-p-tolyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid

3,6-Dimethyl-1-pyrimidin-yl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid ethyl ester

3,6-Dimethyl-1-thiophen-3-yl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid ethyl ester

3,6-Dimethyl-1-pyrimidin-5-yl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid

3,6-Dimethyl-1-thiophen-3-yl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid

1-(4-Methoxyphenyl)-6-methyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid

1-(4-Methoxyphenyl)-3-methyl-1h-pyrazolo[3,4-b]pyridin-4-ol