3-Chloro-2-methoxy-5-(trifluoromethoxy)pyridine-4-sulfonamide
3-(Chloromethyl)-4-cyano-5-fluoro-2-(trifluoromethoxy)pyridine
3-(Chloromethyl)-2-cyano-6-fluoro-5-(trifluoromethoxy)pyridine
6-(Chloromethyl)-2-cyano-3-fluoro-4-(trifluoromethoxy)pyridine