2-Iodo-5-nitro-3-(trifluoromethoxy)pyridine-4-sulfonamide
4-(Bromomethyl)-2-iodo-6-(trifluoromethoxy)pyridine-3-carboxylic acid
6-Iodo-4-nitro-3-(trifluoromethoxy)pyridine-2-sulfonamide
3-(Chloromethyl)-5-iodo-2-(trifluoromethoxy)pyridine-4-carboxylic acid