Ethyl 3-methoxy-4-nitro-5-(trifluoromethoxy)pyridine-2-acetate
Methyl 2-(fluoromethyl)-5-methoxy-4-(trifluoromethoxy)pyridine-3-acetate
2-Methoxy-4-nitro-3-(trifluoromethoxy)pyridine-6-carboxylic acid
Ethyl 3-methoxy-2-nitro-5-(trifluoromethoxy)pyridine-4-acetate