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