ethyl 1-cyclopropyl-7-(2,6-dimethyl-4-pyridinyl)-6,8-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylate

4-溴-2,3,5,6-四氟苯甲酸

ethyl 1-cyclopropyl-7-(2,6-dimethylpyridin-4-yl)-5,6,8-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylate

4-溴-2,3,5,6-四氟苯甲酰氯

ethyl 3-(4-bromo-2,3,5,6-tetrafluorophenyl)-3-oxopropanoate