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