5-Bromo-2-(chloromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylic acid
4-Bromo-6-(chloromethyl)-3-(trifluoromethoxy)pyridine-2-carboxylic acid
6-Chloro-2-(chloromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine
2-Chloro-4-(chloromethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine