4-Chloro-5-hydrazinylpyridazin-3-ol
3-Chlorothieno[2,3-b]pyridine-2-carbonitrile
7-Bromooxazolo[4,5-c]pyridine
(E)-Ethyl 3-(imidazo[1,2-a]pyridin-3-yl)acrylate
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