3-Methoxy-2-nitro-6-(trifluoromethoxy)pyridine-4-carbonyl chloride
4-(Chloromethyl)-6-methoxy-2-nitro-3-(trifluoromethoxy)pyridine
4-(Chloromethyl)-2-methoxy-5-nitro-3-(trifluoromethoxy)pyridine
6-(Fluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine-3-acetic acid