3-Chloro-2-cyano-5-(difluoromethyl)-6-(trifluoromethoxy)pyridine
5-Bromo-2-methyl-3-(trifluoromethoxy)pyridine-6-acetonitrile
4-Bromo-3-methyl-6-(trifluoromethoxy)pyridine-2-acetonitrile
6-Chloro-2-cyano-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine