4-Chloro-6-cyano-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Chloro-2-(chloromethyl)-4-iodo-6-(trifluoromethoxy)pyridine
4-Chloro-2-cyano-3-(trifluoromethoxy)pyridine-5-sulfonyl chloride
2-Chloro-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylic acid