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