Methyl 6-(chloromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-4-acetate
Methyl 2-(chloromethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine-6-acetate
5-Iodo-3-methyl-2-(trifluoromethoxy)pyridine-4-acetic acid
3-Iodo-5-methyl-2-(trifluoromethoxy)pyridine-4-acetic acid