6-Amino-3-(bromomethyl)-2-cyano-4-(difluoromethyl)pyridine
6-Amino-4-(chloromethyl)-3-(difluoromethyl)-2-fluoropyridine
4-Iodo-6-methyl-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
3-Chloro-4-fluoro-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine