6-Methyl-2-vinyl-4,5-dihydropyridazin-3(2H)-one
3-Bromo-1H-pyrrolo[2,3-c]pyridine-4-carboxylic acid
6-Chloro-8-fluoroimidazo[1,2-a]pyridine
5-Bromo-4-chloro-2-iodo-1H-pyrrolo[2,3-b]pyridine
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