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