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