3-(Difluoromethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxaldehyde
Methyl 4-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-5-carboxylate
3-(Difluoromethyl)-2-hydroxy-5-(trifluoromethoxy)pyridine-6-carboxaldehyde
Methyl 4-hydroxy-6-nitro-3-(trifluoromethoxy)pyridine-2-carboxylate