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