2-(Bromomethyl)-6-methyl-3-nitro-4-(trifluoromethoxy)pyridine
3-(Chloromethyl)-2-methoxy-5-(trifluoromethoxy)pyridine-4-acetonitrile
4-(Fluoromethyl)-6-methyl-3-nitro-2-(trifluoromethoxy)pyridine
4-(Fluoromethyl)-2-methyl-3-nitro-5-(trifluoromethoxy)pyridine