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