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