Isoxazolo[5,4-b]pyridin-3-ol
tert-Butyl (2-methoxypyridin-3-yl)carbamate
Ethyl 5-amino-1-(pyridin-4-yl)-1H-pyrazole-4-carboxylate
Ethyl 2-(3-aminopyridin-2-yl)acetate
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