3-Chloro-2-(difluoromethyl)-6-hydroxy-5-(trifluoromethoxy)pyridine
6-Chloro-2-hydroxy-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Chloro-6-hydroxy-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-Chloro-6-(difluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine