3-Hydroxy-4-nitro-6-(trifluoromethoxy)pyridine-2-acetic acid
6-Hydroxy-3-nitro-4-(trifluoromethoxy)pyridine-2-acetic acid
2-Hydroxy-5-nitro-3-(trifluoromethoxy)pyridine-4-acetic acid
2-Hydroxy-5-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-carboxaldehyde