Dinitrofluorobenzene;DNFB;2,4-Dinitro-1-fluorobenzene;Sanger's Reagent;Fluoro-2,4-dinitrobenzene;2,4-Dinitrobenzenefluoride;2,4-Dinitrophenyl fluoride;Fluorodinitrobenzene;Benzene, 1-fluoro-2,4-dinitro-;2,4-Dinitrobenzene fluoride;2,4-DNFB;1-fluoro-2,4-dinitro-benzene;Benzene, 2,4-dinitro-1-fluoro-;DFB (VAN);Fluorodinitrobenzene (VAN);1,2,4-Fluorodinitrobenzene; Isotretinoin impurity
