1H-Pyrazolo[3,4-d]pyridazin-7(6H)-one
7-Bromo-2-chloropyrido[3,2-d]pyrimidine
3-Methyl-1H-pyrrolo[2,3-b]pyridin-5-amine
4-Amino-5-(pyridin-4-yl)-4H-1,2,4-triazole-3-thiol
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