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