1-(2-Bromo-6-nitrobenzyl)pyridinium bromide

香豆素-3-羧酸

2-(2-oxo-3,4-dihydrochromen-4-yl)acetic acid

3-(2-hydroxy-phenyl)-glutaric acid

2-pyridin-1-ium-1-yl-1-pyridin-4-ylethanone,iodide