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