Tert-butyl (s)-3-chloro-7-isopropyl-5,7-dihydro-6h-pyrrolo[3,4-b]pyridine-6-carboxylate
2,2-Dimethyl-5-((pyridin-4-ylamino)methylene)-1,3-dioxane-4,6-dione
5-Chloro-2-((diphenylmethylene)hydrazono)-1,2-dihydropyridine
4,6-Dichloro-5-nitro-2-pyridinecarboxylic acid