2-Hydroxy-5-iodo-6-(trifluoromethoxy)pyridine-3-sulfonamide
2-(Difluoromethyl)-4-hydroxy-5-(trifluoromethoxy)pyridine-3-acetic acid
6-Hydroxy-4-iodo-2-(trifluoromethoxy)pyridine-3-sulfonamide
2-(Difluoromethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-5-acetic acid