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