Methyl 4-methoxy-3-nitro-2-(trifluoromethoxy)pyridine-6-acetate
Methyl 4-methoxy-2-nitro-6-(trifluoromethoxy)pyridine-3-acetate
3-(Fluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine-6-carboxylic acid
Methyl 4-methoxy-2-nitro-3-(trifluoromethoxy)pyridine-6-acetate