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