2-Chloro-1-fluoro-4-nitrobenzene 3-Chloro-4-fluoronitrobenzene 350-30-1 4-05-00-00725 (Beilstein Handbook Reference) BRN 1944997 Benzene, 2-chloro-1-fluoro-4-nitro- EINECS 206-499-3 NSC 163894