4-(Chloromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxylic acid
5-(Difluoromethyl)-2-hydroxy-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
2-(Chloromethyl)-5-hydroxy-6-(trifluoromethoxy)pyridine-3-acetic acid
2-(Chloromethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine-3-acetic acid