1,3-Difluoro-4-nitrobenzene 1-Nitro-2,4-difluorobenzene 2,4-Difluoro-1-nitrobenzene 2,4-Difluoronitrobenzene 4-05-00-00720 (Beilstein Handbook Reference) 446-35-5 BRN 2048034 Benzene, 2,4-difluoro-1-nitro- EINECS 207-167-0 NSC 10259