1,4-Difluorobenzene540-36-331 % similar 6-Fluoro-2-methyl-3-pyridinecarbonitrile375368-85-731 % similar 2-Fluoro-5-nitropyridine456-24-631 % similar 2-Fluoro-6-(trifluoromethyl)pyridine94239-04-031 % similar 2-Fluoro-5-(4 4 5 5-tetramethyl-(1 3 2)&444120-95-030 % similar 4-Fluoropyridine694-52-030 % similar