Methyl 4-(difluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 3-iodo-2-nitro-6-(trifluoromethoxy)pyridine-4-acetate
Methyl 2-(difluoromethyl)-5-hydroxy-6-(trifluoromethoxy)pyridine-3-acetate
Methyl 4-iodo-6-methyl-3-(trifluoromethoxy)pyridine-2-acetate