Methyl 6-hydroxy-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-carboxylate
Methyl 2-hydroxy-6-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-carboxylate
Methyl 2-hydroxy-5-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-carboxylate
Ethyl 4-hydroxy-5-nitro-3-(trifluoromethoxy)pyridine-2-carboxylate