2-Amino-4-(chloromethyl)-6-(trifluoromethoxy)pyridine-3-acetonitrile
4-Bromo-2-chloro-3-(trifluoromethoxy)pyridine-5-sulfonyl chloride
3-Amino-2-iodo-5-methyl-4-(trifluoromethoxy)pyridine
5-Bromo-3-chloro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride