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