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