2-Chloro-5-hydroxy-3-methoxy-6-(trifluoromethoxy)pyridine
4-Chloro-3-(fluoromethyl)-2-hydroxy-5-(trifluoromethoxy)pyridine
4-Chloro-6-(fluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine
4-Chloro-2-(fluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine