Ethyl 2-(chloromethyl)-3-cyano-5-(trifluoromethoxy)pyridine-6-acetate
2-Cyano-5-(fluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetic acid
Ethyl 2-(chloromethyl)-3-cyano-4-(trifluoromethoxy)pyridine-5-acetate
6-Cyano-4-(fluoromethyl)-3-(trifluoromethoxy)pyridine-2-acetic acid