2-(Chloromethyl)-6-methoxy-5-(trifluoromethoxy)pyridine-3-carboxylic acid
6-(Chloromethyl)-3-methoxy-2-(trifluoromethoxy)pyridine-4-carboxylic acid
4-(Bromomethyl)-3-methoxy-2-(trifluoromethoxy)pyridine-6-carboxylic acid
2-(Chloromethyl)-5-methoxy-3-(trifluoromethoxy)pyridine-6-carboxylic acid