Ethyl 6-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-4-acetate
Methyl 2-iodo-3-methyl-4-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 2-hydroxy-4-nitro-6-(trifluoromethoxy)pyridine-3-acetate
3-Iodo-6-methyl-4-(trifluoromethoxy)pyridine-2-carboxylic acid