Methyl 6-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-4-carboxylate
3-Hydroxy-2-nitro-5-(trifluoromethoxy)pyridine-6-acetic acid
3-Hydroxy-2-nitro-4-(trifluoromethoxy)pyridine-5-acetic acid
Methyl 2-hydroxy-5-nitro-3-(trifluoromethoxy)pyridine-6-carboxylate