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