Methyl 2-(pyridin-3-yl)oxazole-4-carboxylate
Ethyl 4,6-dimethoxypyrazolo[1,5-a]pyridine-3-carboxylate
Ethyl 4,6-difluoropyrazolo[1,5-a]pyridine-3-carboxylate
Ethyl 5-phenylpyrazolo[1,5-a]pyridine-3-carboxylate
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