3-Hydroxy-4-methoxy-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride
5-(Chloromethyl)-4-fluoro-3-(trifluoromethoxy)pyridine-2-acetic acid
3-(Chloromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine-5-acetic acid
3-(Chloromethyl)-2-fluoro-5-(trifluoromethoxy)pyridine-6-acetic acid