3-Iodo-4-nitro-2-(trifluoromethoxy)pyridine-5-carboxylic acid
2-(Chloromethyl)-5-hydroxy-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
6-(Difluoromethyl)-2-iodo-3-methyl-4-(trifluoromethoxy)pyridine
6-(Chloromethyl)-4-hydroxy-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine