4-(Fluoromethyl)-3-hydroxy-2-methoxy-5-(trifluoromethoxy)pyridine
2-(Chloromethyl)-5-hydroxy-4-methoxy-3-(trifluoromethoxy)pyridine
6-(Chloromethyl)-4-hydroxy-2-methoxy-3-(trifluoromethoxy)pyridine
3-(Chloromethyl)-2-fluoro-6-(trifluoromethoxy)pyridine-5-carboxylic acid