5-(4-methoxyphenyl)-6-pyridin-4-yl-2,3-dihydroimidazo[2,1-b][1,3]thiazole

4-(4-methoxyphenyl)-5-pyridin-4-yl-1,3-dihydroimidazole-2-thione

5,15-bis(1-methylpyridin-1-ium-3-yl)-10-(1-methylpyridin-1-ium-4-yl)-20-(1-methylpyridin-4-ylidene)porphyrin-22-ide,manganese(2+)

N-benzyl-1-pyridin-4-ylmethanimine

4-(2-pyridin-4-ylethynyl)pyridine