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