4-Chloro-5-(fluoromethyl)-3-(trifluoromethoxy)pyridine-2-acetic acid
4-Chloro-5-(chloromethyl)-3-(trifluoromethoxy)pyridine-2-carboxylic acid
4-Chloro-3-(fluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetic acid
4-Chloro-6-(chloromethyl)-3-(trifluoromethoxy)pyridine-2-carboxylic acid