2-Cyano-3-methoxy-5-(trifluoromethoxy)pyridine-6-sulfonamide
3-Fluoro-2-methoxy-5-(trifluoromethoxy)pyridine-4-sulfonyl chloride
3-(Difluoromethyl)-5-fluoro-2-methyl-6-(trifluoromethoxy)pyridine
6-Fluoro-2-methoxy-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride