3-Chloro-4-cyano-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
3-Bromo-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetic acid
6-Chloro-2-iodo-3-(trifluoromethoxy)pyridine-4-acetonitrile
5-Bromo-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetic acid