2-Bromothieno[2,3-d]pyridazin-4(5H)-one
7-Bromo-8-chloropyrido[2,3-b]pyrazine-2,3(1H,4H)-dione
5-Chloro-2-cyclopropoxypyridine
(4-Hydroxyphenyl)(4-pyridyl)methanone
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