Ethyl 1,3-dimethyl-4-oxo-5-phenyl-4,5-dihydro-1H-pyrrolo[2,3-d]pyridazine-2-carboxylate
2-Chloropyridin-3-amine hydrochloride
4-(2-Chloropyridin-3-yl)pyrimidine
5,10,15,20-Tetra(4-pyridyl)-21H,23H-porphine
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