5-Chloro-2-(fluoromethyl)-4-nitro-3-(trifluoromethoxy)pyridine
3-Chloro-2-(difluoromethyl)-5-nitro-6-(trifluoromethoxy)pyridine
2-Chloro-5-nitro-6-(trifluoromethoxy)pyridine-3-acetonitrile
3-Chloro-2-(difluoromethyl)-4-nitro-5-(trifluoromethoxy)pyridine