3-Hydroxy-5-methyl-2-nitro-4-(trifluoromethoxy)pyridine
5-(Chloromethyl)-2-hydroxy-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine
5-Hydroxy-4-methyl-3-nitro-2-(trifluoromethoxy)pyridine
4-(Chloromethyl)-3-hydroxy-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine