4-Fluoro-3-(trifluoromethyl)benzoic acid4-Fluoro-3-(trifluoromethyl)benzoic acid 98%5-Carboxy-2-fluorobenzotrifluoride4-Fluoro-3-(trifluoromethyl)benzoic acid4-氟-3-(三氟甲基)苯甲酸4-Fluoro-3-trifluoromethylbenzoic acid4-氟-3-三氟甲基苯甲酸alpha,alpha,alpha,4-Tetrafluoro-m-toluic acid