3-Bromo-8-chloropyrido[2,3-d]pyridazine
3-Bromo-6-ethynylpyridazine
3-Bromo-5-(4-chlorophenyl)pyridin-2-amine
3-Amino-2-chloro-9-methyl-4h-pyrido[1,2-a]pyrimidin-4-one
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