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
Methyl 2-hydroxy-5-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-carboxylate