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