Methyl 6-hydroxy-4-methoxy-2-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 2-hydroxy-4-methoxy-5-(trifluoromethoxy)pyridine-3-carboxylate
4-(Difluoromethyl)-6-fluoro-2-nitro-3-(trifluoromethoxy)pyridine
Ethyl 2-hydroxy-3-nitro-5-(trifluoromethoxy)pyridine-4-carboxylate