Methyl 2-methoxy-4-nitro-3-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 4-methoxy-5-methyl-2-(trifluoromethoxy)pyridine-3-acetate
Methyl 2-methoxy-3-nitro-4-(trifluoromethoxy)pyridine-5-carboxylate
4-Methoxy-3-nitro-2-(trifluoromethoxy)pyridine-5-carboxylic acid