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