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