4-Chloro-2-hydrazinylpyridine dihydrochloride
Ethyl 3-oxo-3,4-dihydropyrido[2,3-b]pyrazine-2-carboxylate
7-Chloro-2-iodo-1H-pyrrolo[3,2-c]pyridine
5-Chloropyrazolo[1,5-a]pyridine-3-carboxylic acid
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