2-氨基-4,5-二氟苯甲酸

2-溴-4,5-二氟苯甲酸甲酯

methyl 2-(chlorocarbonyl)-4,5-difluorobenzoate

1-methyl 2-(2-thioxopyridin-1(2H)-yl) 4,5-difluorophthalate

1,2-二氟苯