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