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