3-Amino-4-iodo-2-(trifluoromethoxy)pyridine-5-sulfonamide
3-Amino-4-(difluoromethyl)-5-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Amino-2-iodo-5-(trifluoromethoxy)pyridine-6-sulfonamide
3-Amino-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-5-carboxylic acid