2,3,4-Trifluoronitrobenzene1,2,3-Trifluoro-4-nitrobenzene4-Nitro-1,2,3-trifluorobenzene2,3,4-三氟硝基苯4-硝基-1,2,3-三氟苯2,3,4-Trifluoronitrobenzene1,2,3-三氟-4-硝基苯2,3,4-Trifluoronitrobenzene 99%1,2,3-trifluoro-4-nitrobenzene2,3,4-Trifluoronitrobenzene1,2,3-Trifluoro-4-nitrobenzene1-Nitro-2,3,4-trifluorobenzene1,2,3-三氟-4-硝基苯