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