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