Pyrazolo[1,5-a]pyridine-2,3-dicarboxylic acid
5-Methyl-1-(pyridin-2-yl)-1H-pyrazole-4-carboxylic acid
3-Chloro-6-(naphthalen-2-yl)pyridazine
5-(Pyridin-2-yl)thiophene-2-sulfonyl chloride
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