7-Chloropyrido[3,2-d]pyrimidin-4(3H)-one
4-Cyano-1H-pyrrolo[2,3-c]pyridine-3-carboxylic acid
6-Bromoimidazo[1,5-a]pyridine
2,8-Dimethyl-[1,2,4]triazolo[1,5-a]pyridin-6-amine
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