Ethyl 6-bromo-2-(4-fluorophenyl)imidazo[1,2-a]pyridine-3-carboxylate
Ethyl 5-aminopyrido[3,4-b]pyrazine-8-carboxylate
Ethyl 2-methyl-3-oxo-2,3-dihydropyridazine-4-carboxylate
Ethyl 2-(3-cyanopyridin-4-yl)acetate
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