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