1H-[1,3]oxazolo[5,4-c]pyridine-2-thione

phenyl N-[3-(pyridin-4-ylcarbamoyl)phenyl]carbamate

4-methoxy-N-[2-(pyridin-4-ylamino)pyridin-3-yl]benzenesulfonamide

1-hexadecylpyridin-1-ium-4-amine,bromide

1-(4-methylphenyl)-3-pyridin-4-ylurea