Ethyl 8-allyl-5-hydroxy-2-(methylthio)-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylate
6-Oxo-3,6-dihydropyridazine-3-carboxylic acid
Dimethyl 4-methylpyridine-2,6-dicarboxylate
1-(Pyridin-2-yl)-1,4-diazepane
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