ethyl 1-cyclopropyl-6,7-difluoro-5-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylate

2,4,5-三氟溴苯

2,4,5-三氟苯甲酸

2,4,5-三氟苯甲酰氯

2-甲基-3,4,6-三氟苯甲酸