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