ethyl 5-amino-1-cyclopropyl-6,7-difluoro-1,4-dihydro-8-methyl-4-oxoquinoline-3-carboxylate

2,4,5-三氟-3-甲基苯甲酸

2,4,5-三氟-3-甲基-6-硝基苯甲酸

2,4,5-trifluoro-3-methyl-6-nitrobenzoyl chloride

ethyl (2,4,5-trifluoro-3-methyl-6-nitrobenzoyl)acetate