7-chloronaphthalene-1-carboxylic acid

5-甲酰基-2-呋喃甲酸甲酯

5-叔丁基呋喃-2-羧酸甲酯

methyl 5-pyridin-3-ylfuran-2-carboxylate

2-(furan-2-yl)-1H-pyrrole