Methyl 5-bromo-2-chloro-1-methyl-6-oxo-1,6-dihydropyridine-3-carboxylate
3-Aminofuro[2,3-b]pyridine-2-carboxylic acid
2-Bromo-3a,4,5,6,7,7a-hexahydrothieno[3,2-c]pyridine
4-Hydroxy-6-oxo-1,6-dihydropyridazine-3-carboxylic acid
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