Ethyl 2-hydroxy-3-nitro-6-(trifluoromethoxy)pyridine-4-carboxylate
3-(Chloromethyl)-6-hydroxy-4-methyl-2-(trifluoromethoxy)pyridine
5-(Chloromethyl)-2-hydroxy-3-methyl-4-(trifluoromethoxy)pyridine
4-(Chloromethyl)-5-hydroxy-3-methyl-2-(trifluoromethoxy)pyridine