4-(Difluoromethyl)-6-iodo-2-nitro-3-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-2-iodo-5-nitro-3-(trifluoromethoxy)pyridine
5-(Chloromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine-4-acetonitrile
6-Hydroxy-3-methyl-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride