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